Finding the Fourth Proportional to 1,339,538.24, 2,010,090.72 and 498,685.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339,538.24 : 2,010,090.72 = 498,685.76 : x
2. Step 2: Convert to fraction form
   1,339,538.24/2,010,090.72 = 498,685.76/x
3. Step 3: Cross multiply
   1,339,538.24x = 2,010,090.72 × 498,685.76
4. Step 4: Simplify right side
   1,339,538.24x = 1,002,403,618,372.15
5. Step 5: Solve for x
   x = 1,002,403,618,372.15/1,339,538.24
6. Step 6: Final answer
   x = 748,320.27