Finding the Fourth Proportional to 3,726.63, 5,142.69 and 2,154.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,726.63 : 5,142.69 = 2,154.69 : x
2. Step 2: Convert to fraction form
   3,726.63/5,142.69 = 2,154.69/x
3. Step 3: Cross multiply
   3,726.63x = 5,142.69 × 2,154.69
4. Step 4: Simplify right side
   3,726.63x = 11,080,902.72
5. Step 5: Solve for x
   x = 11,080,902.72/3,726.63
6. Step 6: Final answer
   x = 2,973.44