Finding the Fourth Proportional to 1,105.41, 1,525.56 and 685.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.41 : 1,525.56 = 685.67 : x
2. Step 2: Convert to fraction form
   1,105.41/1,525.56 = 685.67/x
3. Step 3: Cross multiply
   1,105.41x = 1,525.56 × 685.67
4. Step 4: Simplify right side
   1,105.41x = 1,046,020.53
5. Step 5: Solve for x
   x = 1,046,020.53/1,105.41
6. Step 6: Final answer
   x = 946.27