Finding the Fourth Proportional to 2,329.31, 3,479.80 and 1,665.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,329.31 : 3,479.80 = 1,665.92 : x
2. Step 2: Convert to fraction form
   2,329.31/3,479.80 = 1,665.92/x
3. Step 3: Cross multiply
   2,329.31x = 3,479.80 × 1,665.92
4. Step 4: Simplify right side
   2,329.31x = 5,797,055.54
5. Step 5: Solve for x
   x = 5,797,055.54/2,329.31
6. Step 6: Final answer
   x = 2,488.75