Finding the Fourth Proportional to 1,077,380.57, 1,612,078.96 and 863,499.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077,380.57 : 1,612,078.96 = 863,499.79 : x
2. Step 2: Convert to fraction form
   1,077,380.57/1,612,078.96 = 863,499.79/x
3. Step 3: Cross multiply
   1,077,380.57x = 1,612,078.96 × 863,499.79
4. Step 4: Simplify right side
   1,077,380.57x = 1,392,029,844,898.83
5. Step 5: Solve for x
   x = 1,392,029,844,898.83/1,077,380.57
6. Step 6: Final answer
   x = 1,292,050.26