Finding the Fourth Proportional to 1,015.88, 1,401.98 and 573.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.88 : 1,401.98 = 573.86 : x
2. Step 2: Convert to fraction form
   1,015.88/1,401.98 = 573.86/x
3. Step 3: Cross multiply
   1,015.88x = 1,401.98 × 573.86
4. Step 4: Simplify right side
   1,015.88x = 804,530.36
5. Step 5: Solve for x
   x = 804,530.36/1,015.88
6. Step 6: Final answer
   x = 791.96