Finding the Fourth Proportional to 3,791.16, 5,685.98 and 1,017.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,791.16 : 5,685.98 = 1,017.20 : x
2. Step 2: Convert to fraction form
   3,791.16/5,685.98 = 1,017.20/x
3. Step 3: Cross multiply
   3,791.16x = 5,685.98 × 1,017.20
4. Step 4: Simplify right side
   3,791.16x = 5,783,778.86
5. Step 5: Solve for x
   x = 5,783,778.86/3,791.16
6. Step 6: Final answer
   x = 1,525.60