Finding the Fourth Proportional to 3,196.62, 4,411.22 and 1,780.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.62 : 4,411.22 = 1,780.28 : x
2. Step 2: Convert to fraction form
   3,196.62/4,411.22 = 1,780.28/x
3. Step 3: Cross multiply
   3,196.62x = 4,411.22 × 1,780.28
4. Step 4: Simplify right side
   3,196.62x = 7,853,206.74
5. Step 5: Solve for x
   x = 7,853,206.74/3,196.62
6. Step 6: Final answer
   x = 2,456.72