Finding the Fourth Proportional to 2,424.56, 3,638.46 and 885.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,424.56 : 3,638.46 = 885.56 : x
2. Step 2: Convert to fraction form
   2,424.56/3,638.46 = 885.56/x
3. Step 3: Cross multiply
   2,424.56x = 3,638.46 × 885.56
4. Step 4: Simplify right side
   2,424.56x = 3,222,074.64
5. Step 5: Solve for x
   x = 3,222,074.64/2,424.56
6. Step 6: Final answer
   x = 1,328.93