Finding the Fourth Proportional to 1,039.40, 1,434.42 and 597.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.40 : 1,434.42 = 597.33 : x
2. Step 2: Convert to fraction form
   1,039.40/1,434.42 = 597.33/x
3. Step 3: Cross multiply
   1,039.40x = 1,434.42 × 597.33
4. Step 4: Simplify right side
   1,039.40x = 856,814.93
5. Step 5: Solve for x
   x = 856,814.93/1,039.40
6. Step 6: Final answer
   x = 824.34