Finding the Fourth Proportional to 585,042.83, 820,831.43 and 585,042.83

Step by Step Solution

1. Step 1: Write the proportion equation
   585,042.83 : 820,831.43 = 585,042.83 : x
2. Step 2: Convert to fraction form
   585,042.83/820,831.43 = 585,042.83/x
3. Step 3: Cross multiply
   585,042.83x = 820,831.43 × 585,042.83
4. Step 4: Simplify right side
   585,042.83x = 480,221,535,730.78
5. Step 5: Solve for x
   x = 480,221,535,730.78/585,042.83
6. Step 6: Final answer
   x = 820,831.43