Finding the Fourth Proportional to 2,568.98, 3,853.28 and 720.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.98 : 3,853.28 = 720.00 : x
2. Step 2: Convert to fraction form
   2,568.98/3,853.28 = 720.00/x
3. Step 3: Cross multiply
   2,568.98x = 3,853.28 × 720.00
4. Step 4: Simplify right side
   2,568.98x = 2,774,365.27
5. Step 5: Solve for x
   x = 2,774,365.27/2,568.98
6. Step 6: Final answer
   x = 1,079.95