Finding the Fourth Proportional to 1,042,499.76, 1,563,399.72 and 663,186.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,042,499.76 : 1,563,399.72 = 663,186.48 : x
2. Step 2: Convert to fraction form
   1,042,499.76/1,563,399.72 = 663,186.48/x
3. Step 3: Cross multiply
   1,042,499.76x = 1,563,399.72 × 663,186.48
4. Step 4: Simplify right side
   1,042,499.76x = 1,036,825,557,139.79
5. Step 5: Solve for x
   x = 1,036,825,557,139.79/1,042,499.76
6. Step 6: Final answer
   x = 994,557.12