Finding the Fourth Proportional to 3,222.96, 4,824.72 and 2,123.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,222.96 : 4,824.72 = 2,123.88 : x
2. Step 2: Convert to fraction form
   3,222.96/4,824.72 = 2,123.88/x
3. Step 3: Cross multiply
   3,222.96x = 4,824.72 × 2,123.88
4. Step 4: Simplify right side
   3,222.96x = 10,247,126.31
5. Step 5: Solve for x
   x = 10,247,126.31/3,222.96
6. Step 6: Final answer
   x = 3,179.41