Finding the Fourth Proportional to 3,730.59, 5,147.42 and 2,158.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,730.59 : 5,147.42 = 2,158.38 : x
2. Step 2: Convert to fraction form
   3,730.59/5,147.42 = 2,158.38/x
3. Step 3: Cross multiply
   3,730.59x = 5,147.42 × 2,158.38
4. Step 4: Simplify right side
   3,730.59x = 11,110,077.59
5. Step 5: Solve for x
   x = 11,110,077.59/3,730.59
6. Step 6: Final answer
   x = 2,978.10