Finding the Fourth Proportional to 2,501.31, 3,453.18 and 1,557.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,501.31 : 3,453.18 = 1,557.92 : x
2. Step 2: Convert to fraction form
   2,501.31/3,453.18 = 1,557.92/x
3. Step 3: Cross multiply
   2,501.31x = 3,453.18 × 1,557.92
4. Step 4: Simplify right side
   2,501.31x = 5,379,760.92
5. Step 5: Solve for x
   x = 5,379,760.92/2,501.31
6. Step 6: Final answer
   x = 2,150.78