Finding the Fourth Proportional to 2,066.88, 3,103.29 and 1,284.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.88 : 3,103.29 = 1,284.36 : x
2. Step 2: Convert to fraction form
   2,066.88/3,103.29 = 1,284.36/x
3. Step 3: Cross multiply
   2,066.88x = 3,103.29 × 1,284.36
4. Step 4: Simplify right side
   2,066.88x = 3,985,741.54
5. Step 5: Solve for x
   x = 3,985,741.54/2,066.88
6. Step 6: Final answer
   x = 1,928.39