Finding the Fourth Proportional to 3,139.98, 4,710.61 and 948.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,139.98 : 4,710.61 = 948.73 : x
2. Step 2: Convert to fraction form
   3,139.98/4,710.61 = 948.73/x
3. Step 3: Cross multiply
   3,139.98x = 4,710.61 × 948.73
4. Step 4: Simplify right side
   3,139.98x = 4,469,073.47
5. Step 5: Solve for x
   x = 4,469,073.47/3,139.98
6. Step 6: Final answer
   x = 1,423.28