Finding the Fourth Proportional to 2,780,543.00, 4,171,264.50 and 861,003.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,780,543.00 : 4,171,264.50 = 861,003.06 : x
2. Step 2: Convert to fraction form
   2,780,543.00/4,171,264.50 = 861,003.06/x
3. Step 3: Cross multiply
   2,780,543.00x = 4,171,264.50 × 861,003.06
4. Step 4: Simplify right side
   2,780,543.00x = 3,591,471,498,569.37
5. Step 5: Solve for x
   x = 3,591,471,498,569.37/2,780,543.00
6. Step 6: Final answer
   x = 1,291,643.94