Finding the Fourth Proportional to 2,168.96, 2,993.18 and 1,224.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.96 : 2,993.18 = 1,224.98 : x
2. Step 2: Convert to fraction form
   2,168.96/2,993.18 = 1,224.98/x
3. Step 3: Cross multiply
   2,168.96x = 2,993.18 × 1,224.98
4. Step 4: Simplify right side
   2,168.96x = 3,666,585.64
5. Step 5: Solve for x
   x = 3,666,585.64/2,168.96
6. Step 6: Final answer
   x = 1,690.48