Finding the Fourth Proportional to 2,700.80, 3,727.41 and 1,521.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,700.80 : 3,727.41 = 1,521.98 : x
2. Step 2: Convert to fraction form
   2,700.80/3,727.41 = 1,521.98/x
3. Step 3: Cross multiply
   2,700.80x = 3,727.41 × 1,521.98
4. Step 4: Simplify right side
   2,700.80x = 5,673,043.47
5. Step 5: Solve for x
   x = 5,673,043.47/2,700.80
6. Step 6: Final answer
   x = 2,100.50