Finding the Fourth Proportional to 3,222.89, 4,826.12 and 2,123.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,222.89 : 4,826.12 = 2,123.92 : x
2. Step 2: Convert to fraction form
   3,222.89/4,826.12 = 2,123.92/x
3. Step 3: Cross multiply
   3,222.89x = 4,826.12 × 2,123.92
4. Step 4: Simplify right side
   3,222.89x = 10,250,306.12
5. Step 5: Solve for x
   x = 10,250,306.12/3,222.89
6. Step 6: Final answer
   x = 3,180.47