Refer to figure.
Step 1. Calculate the loaded mass of the aircraft:

• Loaded mass = 1200 + 200 + 50 + 250 = 1700 kg

Step 2. Plot the graph.

• Start the line horizontally from the BEM (1200 kg) until you reach the BEM moment (3.00)
• Once you intercept the moment of the BEM draw a line vertically up until you intercept the front seat PAX
• Continue the line to the left (arrows shows left) to represent 200 kg for the front pax
• Draw the line vertically down until you intercept Cargo on the floor
• Draw the line to the left to represent 50 kg cargo
• Draw the line vertically down until you intercept fuel
• Draw the line to the right (arrows to the right) represent 250 kg of fuel
• Draw the line vertically down until you intercept the loaded mass of the aeroplane (1700 kg)
• Finally, follow the fan lines as accurately as possible to plot the CG. I achieved 2.963 which is closest to 2.97