Finding the Fourth Proportional to 2,217.41, 3,310.24 and 2,140.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.41 : 3,310.24 = 2,140.55 : x
2. Step 2: Convert to fraction form
   2,217.41/3,310.24 = 2,140.55/x
3. Step 3: Cross multiply
   2,217.41x = 3,310.24 × 2,140.55
4. Step 4: Simplify right side
   2,217.41x = 7,085,734.23
5. Step 5: Solve for x
   x = 7,085,734.23/2,217.41
6. Step 6: Final answer
   x = 3,195.50