Finding the Fourth Proportional to 2,613.10, 3,604.22 and 1,618.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.10 : 3,604.22 = 1,618.85 : x
2. Step 2: Convert to fraction form
   2,613.10/3,604.22 = 1,618.85/x
3. Step 3: Cross multiply
   2,613.10x = 3,604.22 × 1,618.85
4. Step 4: Simplify right side
   2,613.10x = 5,834,691.55
5. Step 5: Solve for x
   x = 5,834,691.55/2,613.10
6. Step 6: Final answer
   x = 2,232.86