Can you please tell me if it's possible to install fonts in Acrobat X1 Pro?
You don't install fonts in Acrobat, you install them in your operating system, and then Acrobat will have access to the new font(s). How you install the fonts depends on your operating system.
Here are the instructions for Windows 10:
Install or uninstall fonts
And here are instructions for Mac OS X:
Mac Basics: Font Book - Apple Support
Retrieving data ...