Finding the Fourth Proportional to 2,145,839.72, 2,961,211.20 and 1,165,753.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145,839.72 : 2,961,211.20 = 1,165,753.43 : x
2. Step 2: Convert to fraction form
   2,145,839.72/2,961,211.20 = 1,165,753.43/x
3. Step 3: Cross multiply
   2,145,839.72x = 2,961,211.20 × 1,165,753.43
4. Step 4: Simplify right side
   2,145,839.72x = 3,452,042,113,354.42
5. Step 5: Solve for x
   x = 3,452,042,113,354.42/2,145,839.72
6. Step 6: Final answer
   x = 1,608,713.87