Finding the Fourth Proportional to 1,544.28, 2,315.46 and 722.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.28 : 2,315.46 = 722.72 : x
2. Step 2: Convert to fraction form
   1,544.28/2,315.46 = 722.72/x
3. Step 3: Cross multiply
   1,544.28x = 2,315.46 × 722.72
4. Step 4: Simplify right side
   1,544.28x = 1,673,429.25
5. Step 5: Solve for x
   x = 1,673,429.25/1,544.28
6. Step 6: Final answer
   x = 1,083.63