Finding the Fourth Proportional to 3,108,340.50, 4,662,773.19 and 864,478.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,108,340.50 : 4,662,773.19 = 864,478.50 : x
2. Step 2: Convert to fraction form
   3,108,340.50/4,662,773.19 = 864,478.50/x
3. Step 3: Cross multiply
   3,108,340.50x = 4,662,773.19 × 864,478.50
4. Step 4: Simplify right side
   3,108,340.50x = 4,030,867,173,131.42
5. Step 5: Solve for x
   x = 4,030,867,173,131.42/3,108,340.50
6. Step 6: Final answer
   x = 1,296,790.74