1024x768 projector: will it work?

I have access to a 1024x768 projector and need a video source to play a 4:3 720p video (it was originally shot on 16mm, so the video is 960x720). Unfortunately, all I currently have are G4's which can't play back 720p at a reasonable framerate. Can an TV be connected to a 1024x768 projector and play back this video? Any other suggestions (aside from buying a new mac) would be greatly appreciated.