Finding the Fourth Proportional to 2,279.07, 3,419.82 and 980.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.07 : 3,419.82 = 980.46 : x
2. Step 2: Convert to fraction form
   2,279.07/3,419.82 = 980.46/x
3. Step 3: Cross multiply
   2,279.07x = 3,419.82 × 980.46
4. Step 4: Simplify right side
   2,279.07x = 3,352,996.72
5. Step 5: Solve for x
   x = 3,352,996.72/2,279.07
6. Step 6: Final answer
   x = 1,471.21