Finding the Fourth Proportional to 1,354.82, 2,028.56 and 866.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.82 : 2,028.56 = 866.39 : x
2. Step 2: Convert to fraction form
   1,354.82/2,028.56 = 866.39/x
3. Step 3: Cross multiply
   1,354.82x = 2,028.56 × 866.39
4. Step 4: Simplify right side
   1,354.82x = 1,757,509.62
5. Step 5: Solve for x
   x = 1,757,509.62/1,354.82
6. Step 6: Final answer
   x = 1,297.23