Finding the Fourth Proportional to 2,103,872.64, 3,155,789.52 and 906,640.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103,872.64 : 3,155,789.52 = 906,640.80 : x
2. Step 2: Convert to fraction form
   2,103,872.64/3,155,789.52 = 906,640.80/x
3. Step 3: Cross multiply
   2,103,872.64x = 3,155,789.52 × 906,640.80
4. Step 4: Simplify right side
   2,103,872.64x = 2,861,167,535,044.42
5. Step 5: Solve for x
   x = 2,861,167,535,044.42/2,103,872.64
6. Step 6: Final answer
   x = 1,359,952.82