Unless you know what each tire is carrying, using inflation tables is a bit of a mugs game. There can be big differences in side to side loading on RV tires. If you just divide the weight by the number of wheels, you could be well within limits on one tire and over the limit for another. Because of my rig's layout, my left side tires are carrying 600 lbs more empty and probably more like 900 lbs loaded. To give the same load margin for all my tires, I would have to inflate my LH tires to account for the 450 lbs extra they are carrying. Even then, there could be a difference between front and rear.
Load inflation tables just tell you how much load a tire can carry at a certain pressure. They aren't recommended pressures.