Finding the Fourth Proportional to 2,624.12, 3,936.42 and 1,085.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.12 : 3,936.42 = 1,085.24 : x
2. Step 2: Convert to fraction form
   2,624.12/3,936.42 = 1,085.24/x
3. Step 3: Cross multiply
   2,624.12x = 3,936.42 × 1,085.24
4. Step 4: Simplify right side
   2,624.12x = 4,271,960.44
5. Step 5: Solve for x
   x = 4,271,960.44/2,624.12
6. Step 6: Final answer
   x = 1,627.96