Finding the Fourth Proportional to 2,719.04, 4,078.82 and 869.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,719.04 : 4,078.82 = 869.69 : x
2. Step 2: Convert to fraction form
   2,719.04/4,078.82 = 869.69/x
3. Step 3: Cross multiply
   2,719.04x = 4,078.82 × 869.69
4. Step 4: Simplify right side
   2,719.04x = 3,547,290.75
5. Step 5: Solve for x
   x = 3,547,290.75/2,719.04
6. Step 6: Final answer
   x = 1,304.61