Finding the Fourth Proportional to 2,123.20, 3,184.92 and 662.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.20 : 3,184.92 = 662.56 : x
2. Step 2: Convert to fraction form
   2,123.20/3,184.92 = 662.56/x
3. Step 3: Cross multiply
   2,123.20x = 3,184.92 × 662.56
4. Step 4: Simplify right side
   2,123.20x = 2,110,200.60
5. Step 5: Solve for x
   x = 2,110,200.60/2,123.20
6. Step 6: Final answer
   x = 993.88