Finding the Fourth Proportional to 2,105,565.57, 2,905,689.21 and 1,138,695.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,565.57 : 2,905,689.21 = 1,138,695.87 : x
2. Step 2: Convert to fraction form
   2,105,565.57/2,905,689.21 = 1,138,695.87/x
3. Step 3: Cross multiply
   2,105,565.57x = 2,905,689.21 × 1,138,695.87
4. Step 4: Simplify right side
   2,105,565.57x = 3,308,696,302,930.56
5. Step 5: Solve for x
   x = 3,308,696,302,930.56/2,105,565.57
6. Step 6: Final answer
   x = 1,571,405.02