Finding the Fourth Proportional to 2,666.50, 3,983.57 and 2,229.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666.50 : 3,983.57 = 2,229.10 : x
2. Step 2: Convert to fraction form
   2,666.50/3,983.57 = 2,229.10/x
3. Step 3: Cross multiply
   2,666.50x = 3,983.57 × 2,229.10
4. Step 4: Simplify right side
   2,666.50x = 8,879,775.89
5. Step 5: Solve for x
   x = 8,879,775.89/2,666.50
6. Step 6: Final answer
   x = 3,330.12