Finding the Fourth Proportional to 2,616.09, 3,919.23 and 1,314.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.09 : 3,919.23 = 1,314.42 : x
2. Step 2: Convert to fraction form
   2,616.09/3,919.23 = 1,314.42/x
3. Step 3: Cross multiply
   2,616.09x = 3,919.23 × 1,314.42
4. Step 4: Simplify right side
   2,616.09x = 5,151,514.30
5. Step 5: Solve for x
   x = 5,151,514.30/2,616.09
6. Step 6: Final answer
   x = 1,969.17