Finding the Fourth Proportional to 3,151.60, 4,726.74 and 1,071.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,151.60 : 4,726.74 = 1,071.57 : x
2. Step 2: Convert to fraction form
   3,151.60/4,726.74 = 1,071.57/x
3. Step 3: Cross multiply
   3,151.60x = 4,726.74 × 1,071.57
4. Step 4: Simplify right side
   3,151.60x = 5,065,032.78
5. Step 5: Solve for x
   x = 5,065,032.78/3,151.60
6. Step 6: Final answer
   x = 1,607.13