Finding the Fourth Proportional to 2,808.12, 3,872.94 and 2,061.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,808.12 : 3,872.94 = 2,061.24 : x
2. Step 2: Convert to fraction form
   2,808.12/3,872.94 = 2,061.24/x
3. Step 3: Cross multiply
   2,808.12x = 3,872.94 × 2,061.24
4. Step 4: Simplify right side
   2,808.12x = 7,983,058.85
5. Step 5: Solve for x
   x = 7,983,058.85/2,808.12
6. Step 6: Final answer
   x = 2,842.85