Finding the Fourth Proportional to 735.82, 1,103.55 and 215.82

Step by Step Solution

1. Step 1: Write the proportion equation
   735.82 : 1,103.55 = 215.82 : x
2. Step 2: Convert to fraction form
   735.82/1,103.55 = 215.82/x
3. Step 3: Cross multiply
   735.82x = 1,103.55 × 215.82
4. Step 4: Simplify right side
   735.82x = 238,168.16
5. Step 5: Solve for x
   x = 238,168.16/735.82
6. Step 6: Final answer
   x = 323.68