Finding the Fourth Proportional to 2,613.87, 3,919.59 and 1,518.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.87 : 3,919.59 = 1,518.55 : x
2. Step 2: Convert to fraction form
   2,613.87/3,919.59 = 1,518.55/x
3. Step 3: Cross multiply
   2,613.87x = 3,919.59 × 1,518.55
4. Step 4: Simplify right side
   2,613.87x = 5,952,083.60
5. Step 5: Solve for x
   x = 5,952,083.60/2,613.87
6. Step 6: Final answer
   x = 2,277.12