Finding the Fourth Proportional to 2,480.82, 3,704.21 and 2,115.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.82 : 3,704.21 = 2,115.42 : x
2. Step 2: Convert to fraction form
   2,480.82/3,704.21 = 2,115.42/x
3. Step 3: Cross multiply
   2,480.82x = 3,704.21 × 2,115.42
4. Step 4: Simplify right side
   2,480.82x = 7,835,959.92
5. Step 5: Solve for x
   x = 7,835,959.92/2,480.82
6. Step 6: Final answer
   x = 3,158.62