Finding the Fourth Proportional to 1,141.62, 1,575.48 and 699.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.62 : 1,575.48 = 699.42 : x
2. Step 2: Convert to fraction form
   1,141.62/1,575.48 = 699.42/x
3. Step 3: Cross multiply
   1,141.62x = 1,575.48 × 699.42
4. Step 4: Simplify right side
   1,141.62x = 1,101,922.22
5. Step 5: Solve for x
   x = 1,101,922.22/1,141.62
6. Step 6: Final answer
   x = 965.23