Finding the Fourth Proportional to 606,983.10, 851,020.50 and 606,983.10

Step by Step Solution

1. Step 1: Write the proportion equation
   606,983.10 : 851,020.50 = 606,983.10 : x
2. Step 2: Convert to fraction form
   606,983.10/851,020.50 = 606,983.10/x
3. Step 3: Cross multiply
   606,983.10x = 851,020.50 × 606,983.10
4. Step 4: Simplify right side
   606,983.10x = 516,555,061,253.55
5. Step 5: Solve for x
   x = 516,555,061,253.55/606,983.10
6. Step 6: Final answer
   x = 851,020.50