Finding the Fourth Proportional to 3,870.94, 5,806.38 and 949.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.94 : 5,806.38 = 949.22 : x
2. Step 2: Convert to fraction form
   3,870.94/5,806.38 = 949.22/x
3. Step 3: Cross multiply
   3,870.94x = 5,806.38 × 949.22
4. Step 4: Simplify right side
   3,870.94x = 5,511,528.33
5. Step 5: Solve for x
   x = 5,511,528.33/3,870.94
6. Step 6: Final answer
   x = 1,423.82