Finding the Fourth Proportional to 2,213.46, 3,317.69 and 980.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.46 : 3,317.69 = 980.71 : x
2. Step 2: Convert to fraction form
   2,213.46/3,317.69 = 980.71/x
3. Step 3: Cross multiply
   2,213.46x = 3,317.69 × 980.71
4. Step 4: Simplify right side
   2,213.46x = 3,253,685.92
5. Step 5: Solve for x
   x = 3,253,685.92/2,213.46
6. Step 6: Final answer
   x = 1,469.95