Finding the Fourth Proportional to 2,105,426.88, 2,905,490.32 and 1,138,557.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,426.88 : 2,905,490.32 = 1,138,557.11 : x
2. Step 2: Convert to fraction form
   2,105,426.88/2,905,490.32 = 1,138,557.11/x
3. Step 3: Cross multiply
   2,105,426.88x = 2,905,490.32 × 1,138,557.11
4. Step 4: Simplify right side
   2,105,426.88x = 3,308,066,644,498.33
5. Step 5: Solve for x
   x = 3,308,066,644,498.33/2,105,426.88
6. Step 6: Final answer
   x = 1,571,209.47