Finding the Fourth Proportional to 1,502.46, 2,250.50 and 721.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,502.46 : 2,250.50 = 721.31 : x
2. Step 2: Convert to fraction form
   1,502.46/2,250.50 = 721.31/x
3. Step 3: Cross multiply
   1,502.46x = 2,250.50 × 721.31
4. Step 4: Simplify right side
   1,502.46x = 1,623,293.30
5. Step 5: Solve for x
   x = 1,623,293.30/1,502.46
6. Step 6: Final answer
   x = 1,080.42