Finding the Fourth Proportional to 2,123.87, 3,185.69 and 662.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.87 : 3,185.69 = 662.92 : x
2. Step 2: Convert to fraction form
   2,123.87/3,185.69 = 662.92/x
3. Step 3: Cross multiply
   2,123.87x = 3,185.69 × 662.92
4. Step 4: Simplify right side
   2,123.87x = 2,111,846.34
5. Step 5: Solve for x
   x = 2,111,846.34/2,123.87
6. Step 6: Final answer
   x = 994.34