Finding the Fourth Proportional to 2,168.22, 3,249.77 and 997.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.22 : 3,249.77 = 997.15 : x
2. Step 2: Convert to fraction form
   2,168.22/3,249.77 = 997.15/x
3. Step 3: Cross multiply
   2,168.22x = 3,249.77 × 997.15
4. Step 4: Simplify right side
   2,168.22x = 3,240,512.84
5. Step 5: Solve for x
   x = 3,240,512.84/2,168.22
6. Step 6: Final answer
   x = 1,494.55