Finding the Fourth Proportional to 2,118.83, 3,178.91 and 949.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.83 : 3,178.91 = 949.82 : x
2. Step 2: Convert to fraction form
   2,118.83/3,178.91 = 949.82/x
3. Step 3: Cross multiply
   2,118.83x = 3,178.91 × 949.82
4. Step 4: Simplify right side
   2,118.83x = 3,019,392.30
5. Step 5: Solve for x
   x = 3,019,392.30/2,118.83
6. Step 6: Final answer
   x = 1,425.03