Finding the Fourth Proportional to 2,123.31, 3,185.37 and 662.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.31 : 3,185.37 = 662.07 : x
2. Step 2: Convert to fraction form
   2,123.31/3,185.37 = 662.07/x
3. Step 3: Cross multiply
   2,123.31x = 3,185.37 × 662.07
4. Step 4: Simplify right side
   2,123.31x = 2,108,937.92
5. Step 5: Solve for x
   x = 2,108,937.92/2,123.31
6. Step 6: Final answer
   x = 993.23