Finding the Fourth Proportional to 2,431.49, 3,644.43 and 1,042.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.49 : 3,644.43 = 1,042.76 : x
2. Step 2: Convert to fraction form
   2,431.49/3,644.43 = 1,042.76/x
3. Step 3: Cross multiply
   2,431.49x = 3,644.43 × 1,042.76
4. Step 4: Simplify right side
   2,431.49x = 3,800,265.83
5. Step 5: Solve for x
   x = 3,800,265.83/2,431.49
6. Step 6: Final answer
   x = 1,562.94