There is no easy way in the Finder to move a file from one folder to another, unless both the starting folder and the ending folder are in view at the same time.
Typically, one ends up opening a second Finder window and navigating to the destination folder, then dragging the file to it, then closing the second window. Not good.
Here is the easier way to do it: Move To. It’s an Automator based script. After installing Move To, when you right-click a file or folder in the Finder, simply choose “Move to...” from the Services menu.
A standard Mac navigation window will appear (see image at left) in which you choose the destination folder. Press the Choose button. Done.
Copy the "Move to" automator workflow in ~/Library/Services, where "~" is your home folder.
Select one or more files and/or folders in the Finder and right-click (control-click) to bring up the Services menu. Select "Move to…" and a "Choose Destination" window will come up. Navigate to the desired destination and hit Choose. Done.
NOTE: As a safety measure, an item will not move if there is already an item with the same name at the destination.
How to Uninstall
Simply remove the Automator workflow from your ~/Library/Services folder.