Finding the Fourth Proportional to 2,659.42, 3,667.61 and 1,664.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.42 : 3,667.61 = 1,664.79 : x
2. Step 2: Convert to fraction form
   2,659.42/3,667.61 = 1,664.79/x
3. Step 3: Cross multiply
   2,659.42x = 3,667.61 × 1,664.79
4. Step 4: Simplify right side
   2,659.42x = 6,105,800.45
5. Step 5: Solve for x
   x = 6,105,800.45/2,659.42
6. Step 6: Final answer
   x = 2,295.91