Finding the Fourth Proportional to 2,196.41, 3,295.91 and 810.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.41 : 3,295.91 = 810.71 : x
2. Step 2: Convert to fraction form
   2,196.41/3,295.91 = 810.71/x
3. Step 3: Cross multiply
   2,196.41x = 3,295.91 × 810.71
4. Step 4: Simplify right side
   2,196.41x = 2,672,006.66
5. Step 5: Solve for x
   x = 2,672,006.66/2,196.41
6. Step 6: Final answer
   x = 1,216.54