Finding the Fourth Proportional to 3,431.46, 5,148.27 and 1,124.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,431.46 : 5,148.27 = 1,124.58 : x
2. Step 2: Convert to fraction form
   3,431.46/5,148.27 = 1,124.58/x
3. Step 3: Cross multiply
   3,431.46x = 5,148.27 × 1,124.58
4. Step 4: Simplify right side
   3,431.46x = 5,789,641.48
5. Step 5: Solve for x
   x = 5,789,641.48/3,431.46
6. Step 6: Final answer
   x = 1,687.22