Finding the Fourth Proportional to 2,700.50, 3,726.88 and 1,521.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,700.50 : 3,726.88 = 1,521.57 : x
2. Step 2: Convert to fraction form
   2,700.50/3,726.88 = 1,521.57/x
3. Step 3: Cross multiply
   2,700.50x = 3,726.88 × 1,521.57
4. Step 4: Simplify right side
   2,700.50x = 5,670,708.80
5. Step 5: Solve for x
   x = 5,670,708.80/2,700.50
6. Step 6: Final answer
   x = 2,099.87