Finding the Fourth Proportional to 2,680.84, 4,021.98 and 949.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.84 : 4,021.98 = 949.56 : x
2. Step 2: Convert to fraction form
   2,680.84/4,021.98 = 949.56/x
3. Step 3: Cross multiply
   2,680.84x = 4,021.98 × 949.56
4. Step 4: Simplify right side
   2,680.84x = 3,819,111.33
5. Step 5: Solve for x
   x = 3,819,111.33/2,680.84
6. Step 6: Final answer
   x = 1,424.60