Finding the Fourth Proportional to 1,350.31, 1,863.43 and 729.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.31 : 1,863.43 = 729.31 : x
2. Step 2: Convert to fraction form
   1,350.31/1,863.43 = 729.31/x
3. Step 3: Cross multiply
   1,350.31x = 1,863.43 × 729.31
4. Step 4: Simplify right side
   1,350.31x = 1,359,013.52
5. Step 5: Solve for x
   x = 1,359,013.52/1,350.31
6. Step 6: Final answer
   x = 1,006.45