Finding the Fourth Proportional to 2,700.15, 3,726.16 and 1,521.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,700.15 : 3,726.16 = 1,521.20 : x
2. Step 2: Convert to fraction form
   2,700.15/3,726.16 = 1,521.20/x
3. Step 3: Cross multiply
   2,700.15x = 3,726.16 × 1,521.20
4. Step 4: Simplify right side
   2,700.15x = 5,668,234.59
5. Step 5: Solve for x
   x = 5,668,234.59/2,700.15
6. Step 6: Final answer
   x = 2,099.23