Finding the Fourth Proportional to 1,103.58, 1,654.96 and 323.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.58 : 1,654.96 = 323.42 : x
2. Step 2: Convert to fraction form
   1,103.58/1,654.96 = 323.42/x
3. Step 3: Cross multiply
   1,103.58x = 1,654.96 × 323.42
4. Step 4: Simplify right side
   1,103.58x = 535,245.55
5. Step 5: Solve for x
   x = 535,245.55/1,103.58
6. Step 6: Final answer
   x = 485.01