Finding the Fourth Proportional to 2,168.99, 2,993.35 and 1,224.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.99 : 2,993.35 = 1,224.44 : x
2. Step 2: Convert to fraction form
   2,168.99/2,993.35 = 1,224.44/x
3. Step 3: Cross multiply
   2,168.99x = 2,993.35 × 1,224.44
4. Step 4: Simplify right side
   2,168.99x = 3,665,181.90
5. Step 5: Solve for x
   x = 3,665,181.90/2,168.99
6. Step 6: Final answer
   x = 1,689.81