Finding the Fourth Proportional to 2,168.63, 2,992.74 and 1,284.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.63 : 2,992.74 = 1,284.25 : x
2. Step 2: Convert to fraction form
   2,168.63/2,992.74 = 1,284.25/x
3. Step 3: Cross multiply
   2,168.63x = 2,992.74 × 1,284.25
4. Step 4: Simplify right side
   2,168.63x = 3,843,426.35
5. Step 5: Solve for x
   x = 3,843,426.35/2,168.63
6. Step 6: Final answer
   x = 1,772.28