Finding the Fourth Proportional to 2,618.62, 3,908.69 and 2,399.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.62 : 3,908.69 = 2,399.44 : x
2. Step 2: Convert to fraction form
   2,618.62/3,908.69 = 2,399.44/x
3. Step 3: Cross multiply
   2,618.62x = 3,908.69 × 2,399.44
4. Step 4: Simplify right side
   2,618.62x = 9,378,667.13
5. Step 5: Solve for x
   x = 9,378,667.13/2,618.62
6. Step 6: Final answer
   x = 3,581.53