Finding the Fourth Proportional to 2,665.41, 3,679.27 and 2,290.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.41 : 3,679.27 = 2,290.89 : x
2. Step 2: Convert to fraction form
   2,665.41/3,679.27 = 2,290.89/x
3. Step 3: Cross multiply
   2,665.41x = 3,679.27 × 2,290.89
4. Step 4: Simplify right side
   2,665.41x = 8,428,802.85
5. Step 5: Solve for x
   x = 8,428,802.85/2,665.41
6. Step 6: Final answer
   x = 3,162.29