Finding the Fourth Proportional to 1,023.05, 1,411.88 and 581.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,023.05 : 1,411.88 = 581.04 : x
2. Step 2: Convert to fraction form
   1,023.05/1,411.88 = 581.04/x
3. Step 3: Cross multiply
   1,023.05x = 1,411.88 × 581.04
4. Step 4: Simplify right side
   1,023.05x = 820,355.85
5. Step 5: Solve for x
   x = 820,355.85/1,023.05
6. Step 6: Final answer
   x = 801.87