Finding the Fourth Proportional to 3,216.42, 4,823.90 and 908.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,216.42 : 4,823.90 = 908.10 : x
2. Step 2: Convert to fraction form
   3,216.42/4,823.90 = 908.10/x
3. Step 3: Cross multiply
   3,216.42x = 4,823.90 × 908.10
4. Step 4: Simplify right side
   3,216.42x = 4,380,583.59
5. Step 5: Solve for x
   x = 4,380,583.59/3,216.42
6. Step 6: Final answer
   x = 1,361.94