Finding the Fourth Proportional to 1,425,061.20, 2,138,801.40 and 584,216.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425,061.20 : 2,138,801.40 = 584,216.40 : x
2. Step 2: Convert to fraction form
   1,425,061.20/2,138,801.40 = 584,216.40/x
3. Step 3: Cross multiply
   1,425,061.20x = 2,138,801.40 × 584,216.40
4. Step 4: Simplify right side
   1,425,061.20x = 1,249,522,854,222.96
5. Step 5: Solve for x
   x = 1,249,522,854,222.96/1,425,061.20
6. Step 6: Final answer
   x = 876,820.49