Finding the Fourth Proportional to 2,166.09, 3,248.78 and 996.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.09 : 3,248.78 = 996.05 : x
2. Step 2: Convert to fraction form
   2,166.09/3,248.78 = 996.05/x
3. Step 3: Cross multiply
   2,166.09x = 3,248.78 × 996.05
4. Step 4: Simplify right side
   2,166.09x = 3,235,940.59
5. Step 5: Solve for x
   x = 3,235,940.59/2,166.09
6. Step 6: Final answer
   x = 1,493.91