Finding the Fourth Proportional to 3,171.69, 4,759.69 and 1,119.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,171.69 : 4,759.69 = 1,119.69 : x
2. Step 2: Convert to fraction form
   3,171.69/4,759.69 = 1,119.69/x
3. Step 3: Cross multiply
   3,171.69x = 4,759.69 × 1,119.69
4. Step 4: Simplify right side
   3,171.69x = 5,329,377.30
5. Step 5: Solve for x
   x = 5,329,377.30/3,171.69
6. Step 6: Final answer
   x = 1,680.30