Finding the Fourth Proportional to 1,144.10, 1,716.15 and 496.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.10 : 1,716.15 = 496.10 : x
2. Step 2: Convert to fraction form
   1,144.10/1,716.15 = 496.10/x
3. Step 3: Cross multiply
   1,144.10x = 1,716.15 × 496.10
4. Step 4: Simplify right side
   1,144.10x = 851,382.02
5. Step 5: Solve for x
   x = 851,382.02/1,144.10
6. Step 6: Final answer
   x = 744.15