Finding the Fourth Proportional to 935.42, 1,401.78 and 691.34

Step by Step Solution

1. Step 1: Write the proportion equation
   935.42 : 1,401.78 = 691.34 : x
2. Step 2: Convert to fraction form
   935.42/1,401.78 = 691.34/x
3. Step 3: Cross multiply
   935.42x = 1,401.78 × 691.34
4. Step 4: Simplify right side
   935.42x = 969,106.59
5. Step 5: Solve for x
   x = 969,106.59/935.42
6. Step 6: Final answer
   x = 1,036.01