Finding the Fourth Proportional to 2,168.96, 2,993.76 and 1,284.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.96 : 2,993.76 = 1,284.80 : x
2. Step 2: Convert to fraction form
   2,168.96/2,993.76 = 1,284.80/x
3. Step 3: Cross multiply
   2,168.96x = 2,993.76 × 1,284.80
4. Step 4: Simplify right side
   2,168.96x = 3,846,382.85
5. Step 5: Solve for x
   x = 3,846,382.85/2,168.96
6. Step 6: Final answer
   x = 1,773.38