Finding the Fourth Proportional to 3,196.59, 4,411.29 and 1,780.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.59 : 4,411.29 = 1,780.30 : x
2. Step 2: Convert to fraction form
   3,196.59/4,411.29 = 1,780.30/x
3. Step 3: Cross multiply
   3,196.59x = 4,411.29 × 1,780.30
4. Step 4: Simplify right side
   3,196.59x = 7,853,388.63
5. Step 5: Solve for x
   x = 7,853,388.63/3,196.59
6. Step 6: Final answer
   x = 2,456.80