1999 Other Jeep Models Engine cranks, but will not start

I have a 1999 Jeep Grand Cherokee. It was knocking loudly, sounded like an empty spray paint can rattling on Jan 31st then suddenly just died. I have checked the pressure valve on the fuel rail and only a little squirt came out so there is obviously not enough fuel getting to the engine. So I went and purchased a couple cans of starting fluid and sprayed in directly into the throttle body while my fiance was cranking the motor over and still nothing. I pulled out one of the spark plugs and it was very dry and burned so I am guessing there is no spark as well. I don't know what to do here. What do you think it is?