Finding the Fourth Proportional to 1,108.96, 1,663.83 and 493.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108.96 : 1,663.83 = 493.10 : x
2. Step 2: Convert to fraction form
   1,108.96/1,663.83 = 493.10/x
3. Step 3: Cross multiply
   1,108.96x = 1,663.83 × 493.10
4. Step 4: Simplify right side
   1,108.96x = 820,430.64
5. Step 5: Solve for x
   x = 820,430.64/1,108.96
6. Step 6: Final answer
   x = 739.82