Finding the Fourth Proportional to 1,408.46, 1,942.61 and 1,249.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.46 : 1,942.61 = 1,249.11 : x
2. Step 2: Convert to fraction form
   1,408.46/1,942.61 = 1,249.11/x
3. Step 3: Cross multiply
   1,408.46x = 1,942.61 × 1,249.11
4. Step 4: Simplify right side
   1,408.46x = 2,426,527.33
5. Step 5: Solve for x
   x = 2,426,527.33/1,408.46
6. Step 6: Final answer
   x = 1,722.83