Finding the Fourth Proportional to 1,162.56, 1,603.85 and 696.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.56 : 1,603.85 = 696.81 : x
2. Step 2: Convert to fraction form
   1,162.56/1,603.85 = 696.81/x
3. Step 3: Cross multiply
   1,162.56x = 1,603.85 × 696.81
4. Step 4: Simplify right side
   1,162.56x = 1,117,575.23
5. Step 5: Solve for x
   x = 1,117,575.23/1,162.56
6. Step 6: Final answer
   x = 961.31