Finding the Fourth Proportional to 2,297.39, 3,445.20 and 980.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,297.39 : 3,445.20 = 980.31 : x
2. Step 2: Convert to fraction form
   2,297.39/3,445.20 = 980.31/x
3. Step 3: Cross multiply
   2,297.39x = 3,445.20 × 980.31
4. Step 4: Simplify right side
   2,297.39x = 3,377,364.01
5. Step 5: Solve for x
   x = 3,377,364.01/2,297.39
6. Step 6: Final answer
   x = 1,470.09