This poor guy has been looking pathetic for a long time now, and I'd like to help if I can.
It's been putting out roots above the surface of the soil, and it's got one sad leaf left (but seems to be making a new one, so I know it's alive).
Toss it and buy a new one. Just my opinion.
When was the last time you changed the potting medium, and what is your watering pattern? How much sun does it get, and is it direct or indirect? And where are you?
I agree with Tommyz, treat yourself to a new healthy one. I dont believe this one can be saved.