Finding the Fourth Proportional to 2,388.48, 3,581.33 and 722.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.48 : 3,581.33 = 722.11 : x
2. Step 2: Convert to fraction form
   2,388.48/3,581.33 = 722.11/x
3. Step 3: Cross multiply
   2,388.48x = 3,581.33 × 722.11
4. Step 4: Simplify right side
   2,388.48x = 2,586,092.69
5. Step 5: Solve for x
   x = 2,586,092.69/2,388.48
6. Step 6: Final answer
   x = 1,082.74