Finding the Fourth Proportional to 1,015.82, 1,401.82 and 573.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.82 : 1,401.82 = 573.80 : x
2. Step 2: Convert to fraction form
   1,015.82/1,401.82 = 573.80/x
3. Step 3: Cross multiply
   1,015.82x = 1,401.82 × 573.80
4. Step 4: Simplify right side
   1,015.82x = 804,366.39
5. Step 5: Solve for x
   x = 804,366.39/1,015.82
6. Step 6: Final answer
   x = 791.84