Finding the Fourth Proportional to 1,144.16, 1,716.24 and 374.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.16 : 1,716.24 = 374.72 : x
2. Step 2: Convert to fraction form
   1,144.16/1,716.24 = 374.72/x
3. Step 3: Cross multiply
   1,144.16x = 1,716.24 × 374.72
4. Step 4: Simplify right side
   1,144.16x = 643,109.45
5. Step 5: Solve for x
   x = 643,109.45/1,144.16
6. Step 6: Final answer
   x = 562.08