Finding the Fourth Proportional to 2,726.88, 4,086.72 and 993.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726.88 : 4,086.72 = 993.84 : x
2. Step 2: Convert to fraction form
   2,726.88/4,086.72 = 993.84/x
3. Step 3: Cross multiply
   2,726.88x = 4,086.72 × 993.84
4. Step 4: Simplify right side
   2,726.88x = 4,061,545.80
5. Step 5: Solve for x
   x = 4,061,545.80/2,726.88
6. Step 6: Final answer
   x = 1,489.45