Finding the Fourth Proportional to 2,613.10, 3,606.16 and 1,618.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.10 : 3,606.16 = 1,618.88 : x
2. Step 2: Convert to fraction form
   2,613.10/3,606.16 = 1,618.88/x
3. Step 3: Cross multiply
   2,613.10x = 3,606.16 × 1,618.88
4. Step 4: Simplify right side
   2,613.10x = 5,837,940.30
5. Step 5: Solve for x
   x = 5,837,940.30/2,613.10
6. Step 6: Final answer
   x = 2,234.11