Finding the Fourth Proportional to 1,309,401,374.16, 1,809,337,562.76 and 932,403,451.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309,401,374.16 : 1,809,337,562.76 = 932,403,451.62 : x
2. Step 2: Convert to fraction form
   1,309,401,374.16/1,809,337,562.76 = 932,403,451.62/x
3. Step 3: Cross multiply
   1,309,401,374.16x = 1,809,337,562.76 × 932,403,451.62
4. Step 4: Simplify right side
   1,309,401,374.16x = 1,687,032,588,663,142,400
5. Step 5: Solve for x
   x = 1,687,032,588,663,142,400/1,309,401,374.16
6. Step 6: Final answer
   x = 1,288,399,891.70