Finding the Fourth Proportional to 2,140,828.74, 3,210,443.02 and 861,004.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,828.74 : 3,210,443.02 = 861,004.24 : x
2. Step 2: Convert to fraction form
   2,140,828.74/3,210,443.02 = 861,004.24/x
3. Step 3: Cross multiply
   2,140,828.74x = 3,210,443.02 × 861,004.24
4. Step 4: Simplify right side
   2,140,828.74x = 2,764,205,052,498.40
5. Step 5: Solve for x
   x = 2,764,205,052,498.40/2,140,828.74
6. Step 6: Final answer
   x = 1,291,184.58