Finding the Fourth Proportional to 2,123.57, 3,184.32 and 662.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.57 : 3,184.32 = 662.72 : x
2. Step 2: Convert to fraction form
   2,123.57/3,184.32 = 662.72/x
3. Step 3: Cross multiply
   2,123.57x = 3,184.32 × 662.72
4. Step 4: Simplify right side
   2,123.57x = 2,110,312.55
5. Step 5: Solve for x
   x = 2,110,312.55/2,123.57
6. Step 6: Final answer
   x = 993.76