Finding the Fourth Proportional to 1,144.16, 1,579.35 and 696.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.16 : 1,579.35 = 696.04 : x
2. Step 2: Convert to fraction form
   1,144.16/1,579.35 = 696.04/x
3. Step 3: Cross multiply
   1,144.16x = 1,579.35 × 696.04
4. Step 4: Simplify right side
   1,144.16x = 1,099,290.77
5. Step 5: Solve for x
   x = 1,099,290.77/1,144.16
6. Step 6: Final answer
   x = 960.78