Finding the Fourth Proportional to 1,408.84, 2,112.94 and 949.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.84 : 2,112.94 = 949.42 : x
2. Step 2: Convert to fraction form
   1,408.84/2,112.94 = 949.42/x
3. Step 3: Cross multiply
   1,408.84x = 2,112.94 × 949.42
4. Step 4: Simplify right side
   1,408.84x = 2,006,065.98
5. Step 5: Solve for x
   x = 2,006,065.98/1,408.84
6. Step 6: Final answer
   x = 1,423.91