Finding the Fourth Proportional to 3,130.72, 4,698.54 and 1,158.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,130.72 : 4,698.54 = 1,158.30 : x
2. Step 2: Convert to fraction form
   3,130.72/4,698.54 = 1,158.30/x
3. Step 3: Cross multiply
   3,130.72x = 4,698.54 × 1,158.30
4. Step 4: Simplify right side
   3,130.72x = 5,442,318.88
5. Step 5: Solve for x
   x = 5,442,318.88/3,130.72
6. Step 6: Final answer
   x = 1,738.36