Finding the Fourth Proportional to 1,488,186.88, 2,229,826.56 and 857,630.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488,186.88 : 2,229,826.56 = 857,630.72 : x
2. Step 2: Convert to fraction form
   1,488,186.88/2,229,826.56 = 857,630.72/x
3. Step 3: Cross multiply
   1,488,186.88x = 2,229,826.56 × 857,630.72
4. Step 4: Simplify right side
   1,488,186.88x = 1,912,367,758,127.92
5. Step 5: Solve for x
   x = 1,912,367,758,127.92/1,488,186.88
6. Step 6: Final answer
   x = 1,285,032.00