Finding the Fourth Proportional to 2,578,196.40, 3,862,686.60 and 1,245,562.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,196.40 : 3,862,686.60 = 1,245,562.80 : x
2. Step 2: Convert to fraction form
   2,578,196.40/3,862,686.60 = 1,245,562.80/x
3. Step 3: Cross multiply
   2,578,196.40x = 3,862,686.60 × 1,245,562.80
4. Step 4: Simplify right side
   2,578,196.40x = 4,811,218,737,018.48
5. Step 5: Solve for x
   x = 4,811,218,737,018.48/2,578,196.40
6. Step 6: Final answer
   x = 1,866,118.01