Finding the Fourth Proportional to 2,608.29, 3,889.17 and 2,318.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.29 : 3,889.17 = 2,318.51 : x
2. Step 2: Convert to fraction form
   2,608.29/3,889.17 = 2,318.51/x
3. Step 3: Cross multiply
   2,608.29x = 3,889.17 × 2,318.51
4. Step 4: Simplify right side
   2,608.29x = 9,017,067.94
5. Step 5: Solve for x
   x = 9,017,067.94/2,608.29
6. Step 6: Final answer
   x = 3,457.08