Finding the Fourth Proportional to 1,408.67, 1,942.50 and 936.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.67 : 1,942.50 = 936.41 : x
2. Step 2: Convert to fraction form
   1,408.67/1,942.50 = 936.41/x
3. Step 3: Cross multiply
   1,408.67x = 1,942.50 × 936.41
4. Step 4: Simplify right side
   1,408.67x = 1,818,976.43
5. Step 5: Solve for x
   x = 1,818,976.43/1,408.67
6. Step 6: Final answer
   x = 1,291.27