CHANGE OF CG POSITION
Fuel volume (l) should be converted into fuel mass (lb) by using specific gravity 0.72 kg/l.

• Mass (kg) = Volume (l) x Specific Gravity = 30.5 l x 0.72 kg/l = 21.96 kg

Mass change / New total mass = Change of CG / Distance from mass to old CG

• Mass change: 21.96 kg
• New total mass: 746 kg - 21.96 kg = 724.04 kg
• Change of CG: ?
• Distance from mass to old CG: 45 cm - 37.1 cm = 7.9 cm

21.96 kg / 724.04 kg = Change of CG / 7.9 cm
Change of CG = 21.96 kg / 724.04 kg x 7.9 cm = 0.24 cm

Since the fuel station is further away from the datum than the old CG location, the new position of CG will be shifted closer the datum and will be:

New CG position = Old CG position + Change of CG = 37.1 cm - 0.24 cm = 36.9 cm