Finding the Fourth Proportional to 3,171.84, 4,758.34 and 980.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,171.84 : 4,758.34 = 980.42 : x
2. Step 2: Convert to fraction form
   3,171.84/4,758.34 = 980.42/x
3. Step 3: Cross multiply
   3,171.84x = 4,758.34 × 980.42
4. Step 4: Simplify right side
   3,171.84x = 4,665,171.70
5. Step 5: Solve for x
   x = 4,665,171.70/3,171.84
6. Step 6: Final answer
   x = 1,470.81