Finding the Fourth Proportional to 2,128,410.18, 3,189,842.91 and 864,760.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,410.18 : 3,189,842.91 = 864,760.50 : x
2. Step 2: Convert to fraction form
   2,128,410.18/3,189,842.91 = 864,760.50/x
3. Step 3: Cross multiply
   2,128,410.18x = 3,189,842.91 × 864,760.50
4. Step 4: Simplify right side
   2,128,410.18x = 2,758,450,149,773.06
5. Step 5: Solve for x
   x = 2,758,450,149,773.06/2,128,410.18
6. Step 6: Final answer
   x = 1,296,014.36