Finding the Fourth Proportional to 2,680.55, 3,698.57 and 1,618.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.55 : 3,698.57 = 1,618.49 : x
2. Step 2: Convert to fraction form
   2,680.55/3,698.57 = 1,618.49/x
3. Step 3: Cross multiply
   2,680.55x = 3,698.57 × 1,618.49
4. Step 4: Simplify right side
   2,680.55x = 5,986,099.71
5. Step 5: Solve for x
   x = 5,986,099.71/2,680.55
6. Step 6: Final answer
   x = 2,233.16