Finding the Fourth Proportional to 2,217.34, 3,328.10 and 1,122.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.34 : 3,328.10 = 1,122.49 : x
2. Step 2: Convert to fraction form
   2,217.34/3,328.10 = 1,122.49/x
3. Step 3: Cross multiply
   2,217.34x = 3,328.10 × 1,122.49
4. Step 4: Simplify right side
   2,217.34x = 3,735,736.72
5. Step 5: Solve for x
   x = 3,735,736.72/2,217.34
6. Step 6: Final answer
   x = 1,684.79