Finding the Fourth Proportional to 5,123.40, 7,684.94 and 1,660.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.40 : 7,684.94 = 1,660.52 : x
2. Step 2: Convert to fraction form
   5,123.40/7,684.94 = 1,660.52/x
3. Step 3: Cross multiply
   5,123.40x = 7,684.94 × 1,660.52
4. Step 4: Simplify right side
   5,123.40x = 12,760,996.57
5. Step 5: Solve for x
   x = 12,760,996.57/5,123.40
6. Step 6: Final answer
   x = 2,490.73