Finding the Fourth Proportional to 2,123.12, 3,184.56 and 662.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.12 : 3,184.56 = 662.16 : x
2. Step 2: Convert to fraction form
   2,123.12/3,184.56 = 662.16/x
3. Step 3: Cross multiply
   2,123.12x = 3,184.56 × 662.16
4. Step 4: Simplify right side
   2,123.12x = 2,108,688.25
5. Step 5: Solve for x
   x = 2,108,688.25/2,123.12
6. Step 6: Final answer
   x = 993.20