Finding the Fourth Proportional to 3,726.52, 5,142.60 and 2,154.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,726.52 : 5,142.60 = 2,154.88 : x
2. Step 2: Convert to fraction form
   3,726.52/5,142.60 = 2,154.88/x
3. Step 3: Cross multiply
   3,726.52x = 5,142.60 × 2,154.88
4. Step 4: Simplify right side
   3,726.52x = 11,081,685.89
5. Step 5: Solve for x
   x = 11,081,685.89/3,726.52
6. Step 6: Final answer
   x = 2,973.74