Finding the Fourth Proportional to 1,039.40, 1,434.24 and 597.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.40 : 1,434.24 = 597.45 : x
2. Step 2: Convert to fraction form
   1,039.40/1,434.24 = 597.45/x
3. Step 3: Cross multiply
   1,039.40x = 1,434.24 × 597.45
4. Step 4: Simplify right side
   1,039.40x = 856,886.69
5. Step 5: Solve for x
   x = 856,886.69/1,039.40
6. Step 6: Final answer
   x = 824.41