Finding the Fourth Proportional to 2,613.39, 3,605.76 and 1,618.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.39 : 3,605.76 = 1,618.71 : x
2. Step 2: Convert to fraction form
   2,613.39/3,605.76 = 1,618.71/x
3. Step 3: Cross multiply
   2,613.39x = 3,605.76 × 1,618.71
4. Step 4: Simplify right side
   2,613.39x = 5,836,679.77
5. Step 5: Solve for x
   x = 5,836,679.77/2,613.39
6. Step 6: Final answer
   x = 2,233.37