Finding the Fourth Proportional to 1,144.53, 1,579.43 and 696.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.53 : 1,579.43 = 696.25 : x
2. Step 2: Convert to fraction form
   1,144.53/1,579.43 = 696.25/x
3. Step 3: Cross multiply
   1,144.53x = 1,579.43 × 696.25
4. Step 4: Simplify right side
   1,144.53x = 1,099,675.93
5. Step 5: Solve for x
   x = 1,099,675.93/1,144.53
6. Step 6: Final answer
   x = 960.81