Finding the Fourth Proportional to 2,123.39, 3,185.63 and 662.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.39 : 3,185.63 = 662.55 : x
2. Step 2: Convert to fraction form
   2,123.39/3,185.63 = 662.55/x
3. Step 3: Cross multiply
   2,123.39x = 3,185.63 × 662.55
4. Step 4: Simplify right side
   2,123.39x = 2,110,635.84
5. Step 5: Solve for x
   x = 2,110,635.84/2,123.39
6. Step 6: Final answer
   x = 994.00