Finding the Fourth Proportional to 1,015.54, 1,401.42 and 573.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.54 : 1,401.42 = 573.43 : x
2. Step 2: Convert to fraction form
   1,015.54/1,401.42 = 573.43/x
3. Step 3: Cross multiply
   1,015.54x = 1,401.42 × 573.43
4. Step 4: Simplify right side
   1,015.54x = 803,616.27
5. Step 5: Solve for x
   x = 803,616.27/1,015.54
6. Step 6: Final answer
   x = 791.32