Finding the Fourth Proportional to 1,108.29, 1,663.01 and 492.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108.29 : 1,663.01 = 492.42 : x
2. Step 2: Convert to fraction form
   1,108.29/1,663.01 = 492.42/x
3. Step 3: Cross multiply
   1,108.29x = 1,663.01 × 492.42
4. Step 4: Simplify right side
   1,108.29x = 818,900.62
5. Step 5: Solve for x
   x = 818,900.62/1,108.29
6. Step 6: Final answer
   x = 738.89