Finding the Fourth Proportional to 2,666.76, 3,680.70 and 1,618.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666.76 : 3,680.70 = 1,618.56 : x
2. Step 2: Convert to fraction form
   2,666.76/3,680.70 = 1,618.56/x
3. Step 3: Cross multiply
   2,666.76x = 3,680.70 × 1,618.56
4. Step 4: Simplify right side
   2,666.76x = 5,957,433.79
5. Step 5: Solve for x
   x = 5,957,433.79/2,666.76
6. Step 6: Final answer
   x = 2,233.96