Finding the Fourth Proportional to 2,589,434.71, 3,573,632.66 and 1,428,108.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589,434.71 : 3,573,632.66 = 1,428,108.12 : x
2. Step 2: Convert to fraction form
   2,589,434.71/3,573,632.66 = 1,428,108.12/x
3. Step 3: Cross multiply
   2,589,434.71x = 3,573,632.66 × 1,428,108.12
4. Step 4: Simplify right side
   2,589,434.71x = 5,103,533,819,643.20
5. Step 5: Solve for x
   x = 5,103,533,819,643.20/2,589,434.71
6. Step 6: Final answer
   x = 1,970,906.55