Finding the Fourth Proportional to 1,408.68, 1,942.89 and 1,076.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.68 : 1,942.89 = 1,076.28 : x
2. Step 2: Convert to fraction form
   1,408.68/1,942.89 = 1,076.28/x
3. Step 3: Cross multiply
   1,408.68x = 1,942.89 × 1,076.28
4. Step 4: Simplify right side
   1,408.68x = 2,091,093.65
5. Step 5: Solve for x
   x = 2,091,093.65/1,408.68
6. Step 6: Final answer
   x = 1,484.43