Finding the Fourth Proportional to 588,105.52, 812,688.88 and 480,636.34

Step by Step Solution

1. Step 1: Write the proportion equation
   588,105.52 : 812,688.88 = 480,636.34 : x
2. Step 2: Convert to fraction form
   588,105.52/812,688.88 = 480,636.34/x
3. Step 3: Cross multiply
   588,105.52x = 812,688.88 × 480,636.34
4. Step 4: Simplify right side
   588,105.52x = 390,607,808,841.90
5. Step 5: Solve for x
   x = 390,607,808,841.90/588,105.52
6. Step 6: Final answer
   x = 664,179.80