Finding the Fourth Proportional to 2,321.34, 3,479.10 and 1,659.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.34 : 3,479.10 = 1,659.78 : x
2. Step 2: Convert to fraction form
   2,321.34/3,479.10 = 1,659.78/x
3. Step 3: Cross multiply
   2,321.34x = 3,479.10 × 1,659.78
4. Step 4: Simplify right side
   2,321.34x = 5,774,540.60
5. Step 5: Solve for x
   x = 5,774,540.60/2,321.34
6. Step 6: Final answer
   x = 2,487.59