Finding the Fourth Proportional to 1,144.45, 1,715.73 and 450.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.45 : 1,715.73 = 450.82 : x
2. Step 2: Convert to fraction form
   1,144.45/1,715.73 = 450.82/x
3. Step 3: Cross multiply
   1,144.45x = 1,715.73 × 450.82
4. Step 4: Simplify right side
   1,144.45x = 773,485.40
5. Step 5: Solve for x
   x = 773,485.40/1,144.45
6. Step 6: Final answer
   x = 675.86