Finding the Fourth Proportional to 3,238.30, 4,467.72 and 2,118.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,238.30 : 4,467.72 = 2,118.88 : x
2. Step 2: Convert to fraction form
   3,238.30/4,467.72 = 2,118.88/x
3. Step 3: Cross multiply
   3,238.30x = 4,467.72 × 2,118.88
4. Step 4: Simplify right side
   3,238.30x = 9,466,562.55
5. Step 5: Solve for x
   x = 9,466,562.55/3,238.30
6. Step 6: Final answer
   x = 2,923.31