Finding the Fourth Proportional to 1,105.32, 1,658.36 and 693.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.32 : 1,658.36 = 693.98 : x
2. Step 2: Convert to fraction form
   1,105.32/1,658.36 = 693.98/x
3. Step 3: Cross multiply
   1,105.32x = 1,658.36 × 693.98
4. Step 4: Simplify right side
   1,105.32x = 1,150,868.33
5. Step 5: Solve for x
   x = 1,150,868.33/1,105.32
6. Step 6: Final answer
   x = 1,041.20