Finding the Fourth Proportional to 1,039.31, 1,434.15 and 597.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.31 : 1,434.15 = 597.18 : x
2. Step 2: Convert to fraction form
   1,039.31/1,434.15 = 597.18/x
3. Step 3: Cross multiply
   1,039.31x = 1,434.15 × 597.18
4. Step 4: Simplify right side
   1,039.31x = 856,445.70
5. Step 5: Solve for x
   x = 856,445.70/1,039.31
6. Step 6: Final answer
   x = 824.06