Finding the Fourth Proportional to 2,214.09, 3,320.61 and 980.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,214.09 : 3,320.61 = 980.82 : x
2. Step 2: Convert to fraction form
   2,214.09/3,320.61 = 980.82/x
3. Step 3: Cross multiply
   2,214.09x = 3,320.61 × 980.82
4. Step 4: Simplify right side
   2,214.09x = 3,256,920.70
5. Step 5: Solve for x
   x = 3,256,920.70/2,214.09
6. Step 6: Final answer
   x = 1,471.00