Finding the Fourth Proportional to 1,142.57, 1,710.38 and 731.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.57 : 1,710.38 = 731.99 : x
2. Step 2: Convert to fraction form
   1,142.57/1,710.38 = 731.99/x
3. Step 3: Cross multiply
   1,142.57x = 1,710.38 × 731.99
4. Step 4: Simplify right side
   1,142.57x = 1,251,981.67
5. Step 5: Solve for x
   x = 1,251,981.67/1,142.57
6. Step 6: Final answer
   x = 1,095.76