Finding the Fourth Proportional to 2,118.12, 3,177.83 and 949.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.12 : 3,177.83 = 949.10 : x
2. Step 2: Convert to fraction form
   2,118.12/3,177.83 = 949.10/x
3. Step 3: Cross multiply
   2,118.12x = 3,177.83 × 949.10
4. Step 4: Simplify right side
   2,118.12x = 3,016,078.45
5. Step 5: Solve for x
   x = 3,016,078.45/2,118.12
6. Step 6: Final answer
   x = 1,423.94