Finding the Fourth Proportional to 1,499,286.57, 2,248,928.12 and 488,406.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499,286.57 : 2,248,928.12 = 488,406.91 : x
2. Step 2: Convert to fraction form
   1,499,286.57/2,248,928.12 = 488,406.91/x
3. Step 3: Cross multiply
   1,499,286.57x = 2,248,928.12 × 488,406.91
4. Step 4: Simplify right side
   1,499,286.57x = 1,098,392,033,901.31
5. Step 5: Solve for x
   x = 1,098,392,033,901.31/1,499,286.57
6. Step 6: Final answer
   x = 732,609.80