Finding the Fourth Proportional to 2,216.89, 3,324.24 and 1,292.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.89 : 3,324.24 = 1,292.68 : x
2. Step 2: Convert to fraction form
   2,216.89/3,324.24 = 1,292.68/x
3. Step 3: Cross multiply
   2,216.89x = 3,324.24 × 1,292.68
4. Step 4: Simplify right side
   2,216.89x = 4,297,178.56
5. Step 5: Solve for x
   x = 4,297,178.56/2,216.89
6. Step 6: Final answer
   x = 1,938.38