Finding the Fourth Proportional to 1,015.82, 1,401.86 and 573.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.82 : 1,401.86 = 573.73 : x
2. Step 2: Convert to fraction form
   1,015.82/1,401.86 = 573.73/x
3. Step 3: Cross multiply
   1,015.82x = 1,401.86 × 573.73
4. Step 4: Simplify right side
   1,015.82x = 804,279.26
5. Step 5: Solve for x
   x = 804,279.26/1,015.82
6. Step 6: Final answer
   x = 791.75