Finding the Fourth Proportional to 3,730.52, 5,147.55 and 2,158.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,730.52 : 5,147.55 = 2,158.31 : x
2. Step 2: Convert to fraction form
   3,730.52/5,147.55 = 2,158.31/x
3. Step 3: Cross multiply
   3,730.52x = 5,147.55 × 2,158.31
4. Step 4: Simplify right side
   3,730.52x = 11,110,021.51
5. Step 5: Solve for x
   x = 11,110,021.51/3,730.52
6. Step 6: Final answer
   x = 2,978.14