Finding the Fourth Proportional to 1,309,401,362.16, 1,809,337,546.20 and 932,403,439.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309,401,362.16 : 1,809,337,546.20 = 932,403,439.62 : x
2. Step 2: Convert to fraction form
   1,309,401,362.16/1,809,337,546.20 = 932,403,439.62/x
3. Step 3: Cross multiply
   1,309,401,362.16x = 1,809,337,546.20 × 932,403,439.62
4. Step 4: Simplify right side
   1,309,401,362.16x = 1,687,032,551,510,490,624
5. Step 5: Solve for x
   x = 1,687,032,551,510,490,624/1,309,401,362.16
6. Step 6: Final answer
   x = 1,288,399,875.14