Finding the Fourth Proportional to 2,123.32, 3,183.94 and 662.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.32 : 3,183.94 = 662.47 : x
2. Step 2: Convert to fraction form
   2,123.32/3,183.94 = 662.47/x
3. Step 3: Cross multiply
   2,123.32x = 3,183.94 × 662.47
4. Step 4: Simplify right side
   2,123.32x = 2,109,264.73
5. Step 5: Solve for x
   x = 2,109,264.73/2,123.32
6. Step 6: Final answer
   x = 993.38