Finding the Fourth Proportional to 1,103.91, 1,522.44 and 855.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.91 : 1,522.44 = 855.24 : x
2. Step 2: Convert to fraction form
   1,103.91/1,522.44 = 855.24/x
3. Step 3: Cross multiply
   1,103.91x = 1,522.44 × 855.24
4. Step 4: Simplify right side
   1,103.91x = 1,302,051.59
5. Step 5: Solve for x
   x = 1,302,051.59/1,103.91
6. Step 6: Final answer
   x = 1,179.49