Finding the Fourth Proportional to 2,168.64, 2,992.98 and 1,284.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.64 : 2,992.98 = 1,284.45 : x
2. Step 2: Convert to fraction form
   2,168.64/2,992.98 = 1,284.45/x
3. Step 3: Cross multiply
   2,168.64x = 2,992.98 × 1,284.45
4. Step 4: Simplify right side
   2,168.64x = 3,844,333.16
5. Step 5: Solve for x
   x = 3,844,333.16/2,168.64
6. Step 6: Final answer
   x = 1,772.69