Finding the Fourth Proportional to 1,136.56, 1,704.89 and 396.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,136.56 : 1,704.89 = 396.18 : x
2. Step 2: Convert to fraction form
   1,136.56/1,704.89 = 396.18/x
3. Step 3: Cross multiply
   1,136.56x = 1,704.89 × 396.18
4. Step 4: Simplify right side
   1,136.56x = 675,443.32
5. Step 5: Solve for x
   x = 675,443.32/1,136.56
6. Step 6: Final answer
   x = 594.29