Finding the Fourth Proportional to 3,158.31, 4,737.43 and 1,078.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,158.31 : 4,737.43 = 1,078.53 : x
2. Step 2: Convert to fraction form
   3,158.31/4,737.43 = 1,078.53/x
3. Step 3: Cross multiply
   3,158.31x = 4,737.43 × 1,078.53
4. Step 4: Simplify right side
   3,158.31x = 5,109,460.38
5. Step 5: Solve for x
   x = 5,109,460.38/3,158.31
6. Step 6: Final answer
   x = 1,617.78