Finding the Fourth Proportional to 3,196.63, 4,411.38 and 1,780.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.63 : 4,411.38 = 1,780.39 : x
2. Step 2: Convert to fraction form
   3,196.63/4,411.38 = 1,780.39/x
3. Step 3: Cross multiply
   3,196.63x = 4,411.38 × 1,780.39
4. Step 4: Simplify right side
   3,196.63x = 7,853,976.84
5. Step 5: Solve for x
   x = 7,853,976.84/3,196.63
6. Step 6: Final answer
   x = 2,456.96