Finding the Fourth Proportional to 3,137.73, 4,707.29 and 1,057.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,137.73 : 4,707.29 = 1,057.57 : x
2. Step 2: Convert to fraction form
   3,137.73/4,707.29 = 1,057.57/x
3. Step 3: Cross multiply
   3,137.73x = 4,707.29 × 1,057.57
4. Step 4: Simplify right side
   3,137.73x = 4,978,288.69
5. Step 5: Solve for x
   x = 4,978,288.69/3,137.73
6. Step 6: Final answer
   x = 1,586.59