Finding the Fourth Proportional to 2,288.69, 3,433.15 and 728.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.69 : 3,433.15 = 728.81 : x
2. Step 2: Convert to fraction form
   2,288.69/3,433.15 = 728.81/x
3. Step 3: Cross multiply
   2,288.69x = 3,433.15 × 728.81
4. Step 4: Simplify right side
   2,288.69x = 2,502,114.05
5. Step 5: Solve for x
   x = 2,502,114.05/2,288.69
6. Step 6: Final answer
   x = 1,093.25