Finding the Fourth Proportional to 2,123.61, 3,185.88 and 662.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.61 : 3,185.88 = 662.73 : x
2. Step 2: Convert to fraction form
   2,123.61/3,185.88 = 662.73/x
3. Step 3: Cross multiply
   2,123.61x = 3,185.88 × 662.73
4. Step 4: Simplify right side
   2,123.61x = 2,111,378.25
5. Step 5: Solve for x
   x = 2,111,378.25/2,123.61
6. Step 6: Final answer
   x = 994.24