Finding the Fourth Proportional to 2,666.59, 3,680.25 and 1,618.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666.59 : 3,680.25 = 1,618.67 : x
2. Step 2: Convert to fraction form
   2,666.59/3,680.25 = 1,618.67/x
3. Step 3: Cross multiply
   2,666.59x = 3,680.25 × 1,618.67
4. Step 4: Simplify right side
   2,666.59x = 5,957,110.27
5. Step 5: Solve for x
   x = 5,957,110.27/2,666.59
6. Step 6: Final answer
   x = 2,233.98