Finding the Fourth Proportional to 3,196.89, 4,411.35 and 1,780.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.89 : 4,411.35 = 1,780.56 : x
2. Step 2: Convert to fraction form
   3,196.89/4,411.35 = 1,780.56/x
3. Step 3: Cross multiply
   3,196.89x = 4,411.35 × 1,780.56
4. Step 4: Simplify right side
   3,196.89x = 7,854,673.36
5. Step 5: Solve for x
   x = 7,854,673.36/3,196.89
6. Step 6: Final answer
   x = 2,456.97