Finding the Fourth Proportional to 2,158.35, 2,976.19 and 1,659.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.35 : 2,976.19 = 1,659.89 : x
2. Step 2: Convert to fraction form
   2,158.35/2,976.19 = 1,659.89/x
3. Step 3: Cross multiply
   2,158.35x = 2,976.19 × 1,659.89
4. Step 4: Simplify right side
   2,158.35x = 4,940,148.02
5. Step 5: Solve for x
   x = 4,940,148.02/2,158.35
6. Step 6: Final answer
   x = 2,288.85