Finding the Fourth Proportional to 1,679.52, 2,500.24 and 1,660.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.52 : 2,500.24 = 1,660.80 : x
2. Step 2: Convert to fraction form
   1,679.52/2,500.24 = 1,660.80/x
3. Step 3: Cross multiply
   1,679.52x = 2,500.24 × 1,660.80
4. Step 4: Simplify right side
   1,679.52x = 4,152,398.59
5. Step 5: Solve for x
   x = 4,152,398.59/1,679.52
6. Step 6: Final answer
   x = 2,472.37