Finding the Fourth Proportional to 2,808.80, 3,874.63 and 2,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,808.80 : 3,874.63 = 2,144.50 : x
2. Step 2: Convert to fraction form
   2,808.80/3,874.63 = 2,144.50/x
3. Step 3: Cross multiply
   2,808.80x = 3,874.63 × 2,144.50
4. Step 4: Simplify right side
   2,808.80x = 8,309,144.04
5. Step 5: Solve for x
   x = 8,309,144.04/2,808.80
6. Step 6: Final answer
   x = 2,958.25