Finding the Fourth Proportional to 1,105.04, 1,524.52 and 685.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.04 : 1,524.52 = 685.87 : x
2. Step 2: Convert to fraction form
   1,105.04/1,524.52 = 685.87/x
3. Step 3: Cross multiply
   1,105.04x = 1,524.52 × 685.87
4. Step 4: Simplify right side
   1,105.04x = 1,045,619.58
5. Step 5: Solve for x
   x = 1,045,619.58/1,105.04
6. Step 6: Final answer
   x = 946.23