Finding the Fourth Proportional to 1,085.68, 1,629.32 and 675.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.68 : 1,629.32 = 675.42 : x
2. Step 2: Convert to fraction form
   1,085.68/1,629.32 = 675.42/x
3. Step 3: Cross multiply
   1,085.68x = 1,629.32 × 675.42
4. Step 4: Simplify right side
   1,085.68x = 1,100,475.31
5. Step 5: Solve for x
   x = 1,100,475.31/1,085.68
6. Step 6: Final answer
   x = 1,013.63