Finding the Fourth Proportional to 2,568.91, 3,853.06 and 720.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.91 : 3,853.06 = 720.16 : x
2. Step 2: Convert to fraction form
   2,568.91/3,853.06 = 720.16/x
3. Step 3: Cross multiply
   2,568.91x = 3,853.06 × 720.16
4. Step 4: Simplify right side
   2,568.91x = 2,774,819.69
5. Step 5: Solve for x
   x = 2,774,819.69/2,568.91
6. Step 6: Final answer
   x = 1,080.15