Finding the Fourth Proportional to 1,103.92, 1,522.28 and 772.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.92 : 1,522.28 = 772.24 : x
2. Step 2: Convert to fraction form
   1,103.92/1,522.28 = 772.24/x
3. Step 3: Cross multiply
   1,103.92x = 1,522.28 × 772.24
4. Step 4: Simplify right side
   1,103.92x = 1,175,565.51
5. Step 5: Solve for x
   x = 1,175,565.51/1,103.92
6. Step 6: Final answer
   x = 1,064.90