Finding the Fourth Proportional to 1,499,287, 2,248,928.72 and 488,407.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499,287 : 2,248,928.72 = 488,407.31 : x
2. Step 2: Convert to fraction form
   1,499,287/2,248,928.72 = 488,407.31/x
3. Step 3: Cross multiply
   1,499,287x = 2,248,928.72 × 488,407.31
4. Step 4: Simplify right side
   1,499,287x = 1,098,393,226,516.94
5. Step 5: Solve for x
   x = 1,098,393,226,516.94/1,499,287
6. Step 6: Final answer
   x = 732,610.39