Finding the Fourth Proportional to 1,162.12, 1,603.71 and 696.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.12 : 1,603.71 = 696.28 : x
2. Step 2: Convert to fraction form
   1,162.12/1,603.71 = 696.28/x
3. Step 3: Cross multiply
   1,162.12x = 1,603.71 × 696.28
4. Step 4: Simplify right side
   1,162.12x = 1,116,631.20
5. Step 5: Solve for x
   x = 1,116,631.20/1,162.12
6. Step 6: Final answer
   x = 960.86