Finding the Fourth Proportional to 3,086.75, 4,630.23 and 1,138.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.75 : 4,630.23 = 1,138.50 : x
2. Step 2: Convert to fraction form
   3,086.75/4,630.23 = 1,138.50/x
3. Step 3: Cross multiply
   3,086.75x = 4,630.23 × 1,138.50
4. Step 4: Simplify right side
   3,086.75x = 5,271,516.86
5. Step 5: Solve for x
   x = 5,271,516.86/3,086.75
6. Step 6: Final answer
   x = 1,707.79