Finding the Fourth Proportional to 2,419.35, 3,629.46 and 860.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,419.35 : 3,629.46 = 860.27 : x
2. Step 2: Convert to fraction form
   2,419.35/3,629.46 = 860.27/x
3. Step 3: Cross multiply
   2,419.35x = 3,629.46 × 860.27
4. Step 4: Simplify right side
   2,419.35x = 3,122,297.41
5. Step 5: Solve for x
   x = 3,122,297.41/2,419.35
6. Step 6: Final answer
   x = 1,290.55