Finding the Fourth Proportional to 1,039.34, 1,434.18 and 597.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.34 : 1,434.18 = 597.20 : x
2. Step 2: Convert to fraction form
   1,039.34/1,434.18 = 597.20/x
3. Step 3: Cross multiply
   1,039.34x = 1,434.18 × 597.20
4. Step 4: Simplify right side
   1,039.34x = 856,492.30
5. Step 5: Solve for x
   x = 856,492.30/1,039.34
6. Step 6: Final answer
   x = 824.07