Finding the Fourth Proportional to 2,196.97, 3,295.49 and 810.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.97 : 3,295.49 = 810.63 : x
2. Step 2: Convert to fraction form
   2,196.97/3,295.49 = 810.63/x
3. Step 3: Cross multiply
   2,196.97x = 3,295.49 × 810.63
4. Step 4: Simplify right side
   2,196.97x = 2,671,419.01
5. Step 5: Solve for x
   x = 2,671,419.01/2,196.97
6. Step 6: Final answer
   x = 1,215.96