Finding the Fourth Proportional to 2,487.28, 3,726.72 and 1,185.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.28 : 3,726.72 = 1,185.88 : x
2. Step 2: Convert to fraction form
   2,487.28/3,726.72 = 1,185.88/x
3. Step 3: Cross multiply
   2,487.28x = 3,726.72 × 1,185.88
4. Step 4: Simplify right side
   2,487.28x = 4,419,442.71
5. Step 5: Solve for x
   x = 4,419,442.71/2,487.28
6. Step 6: Final answer
   x = 1,776.82