Finding the Fourth Proportional to 3,085.56, 4,630.16 and 1,139.13

Step by Step Solution

1. Step 1: Write the proportion equation
   3,085.56 : 4,630.16 = 1,139.13 : x
2. Step 2: Convert to fraction form
   3,085.56/4,630.16 = 1,139.13/x
3. Step 3: Cross multiply
   3,085.56x = 4,630.16 × 1,139.13
4. Step 4: Simplify right side
   3,085.56x = 5,274,354.16
5. Step 5: Solve for x
   x = 5,274,354.16/3,085.56
6. Step 6: Final answer
   x = 1,709.37