Finding the Fourth Proportional to 2,580,978.31, 3,561,728.48 and 1,435,048.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580,978.31 : 3,561,728.48 = 1,435,048.63 : x
2. Step 2: Convert to fraction form
   2,580,978.31/3,561,728.48 = 1,435,048.63/x
3. Step 3: Cross multiply
   2,580,978.31x = 3,561,728.48 × 1,435,048.63
4. Step 4: Simplify right side
   2,580,978.31x = 5,111,253,575,655.98
5. Step 5: Solve for x
   x = 5,111,253,575,655.98/2,580,978.31
6. Step 6: Final answer
   x = 1,980,355.11