Finding the Fourth Proportional to 3,086, 4,630.82 and 1,139.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086 : 4,630.82 = 1,139.57 : x
2. Step 2: Convert to fraction form
   3,086/4,630.82 = 1,139.57/x
3. Step 3: Cross multiply
   3,086x = 4,630.82 × 1,139.57
4. Step 4: Simplify right side
   3,086x = 5,277,143.55
5. Step 5: Solve for x
   x = 5,277,143.55/3,086
6. Step 6: Final answer
   x = 1,710.03