Finding the Fourth Proportional to 2,665.50, 3,982.08 and 2,228.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.50 : 3,982.08 = 2,228.10 : x
2. Step 2: Convert to fraction form
   2,665.50/3,982.08 = 2,228.10/x
3. Step 3: Cross multiply
   2,665.50x = 3,982.08 × 2,228.10
4. Step 4: Simplify right side
   2,665.50x = 8,872,472.45
5. Step 5: Solve for x
   x = 8,872,472.45/2,665.50
6. Step 6: Final answer
   x = 3,328.63