Finding the Fourth Proportional to 3,196.25, 4,410.89 and 1,780.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.25 : 4,410.89 = 1,780.05 : x
2. Step 2: Convert to fraction form
   3,196.25/4,410.89 = 1,780.05/x
3. Step 3: Cross multiply
   3,196.25x = 4,410.89 × 1,780.05
4. Step 4: Simplify right side
   3,196.25x = 7,851,604.74
5. Step 5: Solve for x
   x = 7,851,604.74/3,196.25
6. Step 6: Final answer
   x = 2,456.51