Finding the Fourth Proportional to 1,162.40, 1,603.60 and 696.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.40 : 1,603.60 = 696.38 : x
2. Step 2: Convert to fraction form
   1,162.40/1,603.60 = 696.38/x
3. Step 3: Cross multiply
   1,162.40x = 1,603.60 × 696.38
4. Step 4: Simplify right side
   1,162.40x = 1,116,705.21
5. Step 5: Solve for x
   x = 1,116,705.21/1,162.40
6. Step 6: Final answer
   x = 960.69