Finding the Fourth Proportional to 1,240.72, 1,711.68 and 798.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,240.72 : 1,711.68 = 798.52 : x
2. Step 2: Convert to fraction form
   1,240.72/1,711.68 = 798.52/x
3. Step 3: Cross multiply
   1,240.72x = 1,711.68 × 798.52
4. Step 4: Simplify right side
   1,240.72x = 1,366,810.71
5. Step 5: Solve for x
   x = 1,366,810.71/1,240.72
6. Step 6: Final answer
   x = 1,101.63