Finding the Fourth Proportional to 2,639,584.78, 3,960,874.83 and 1,425,145.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639,584.78 : 3,960,874.83 = 1,425,145.12 : x
2. Step 2: Convert to fraction form
   2,639,584.78/3,960,874.83 = 1,425,145.12/x
3. Step 3: Cross multiply
   2,639,584.78x = 3,960,874.83 × 1,425,145.12
4. Step 4: Simplify right side
   2,639,584.78x = 5,644,821,434,905.33
5. Step 5: Solve for x
   x = 5,644,821,434,905.33/2,639,584.78
6. Step 6: Final answer
   x = 2,138,526.29