Finding the Fourth Proportional to 2,568.56, 3,853.49 and 719.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.56 : 3,853.49 = 719.69 : x
2. Step 2: Convert to fraction form
   2,568.56/3,853.49 = 719.69/x
3. Step 3: Cross multiply
   2,568.56x = 3,853.49 × 719.69
4. Step 4: Simplify right side
   2,568.56x = 2,773,295.35
5. Step 5: Solve for x
   x = 2,773,295.35/2,568.56
6. Step 6: Final answer
   x = 1,079.71