Finding the Fourth Proportional to 2,458.11, 3,687.72 and 814.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,458.11 : 3,687.72 = 814.83 : x
2. Step 2: Convert to fraction form
   2,458.11/3,687.72 = 814.83/x
3. Step 3: Cross multiply
   2,458.11x = 3,687.72 × 814.83
4. Step 4: Simplify right side
   2,458.11x = 3,004,864.89
5. Step 5: Solve for x
   x = 3,004,864.89/2,458.11
6. Step 6: Final answer
   x = 1,222.43