Finding the Fourth Proportional to 1,105.92, 1,525.55 and 773.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.92 : 1,525.55 = 773.60 : x
2. Step 2: Convert to fraction form
   1,105.92/1,525.55 = 773.60/x
3. Step 3: Cross multiply
   1,105.92x = 1,525.55 × 773.60
4. Step 4: Simplify right side
   1,105.92x = 1,180,153.98
5. Step 5: Solve for x
   x = 1,180,153.98/1,105.92
6. Step 6: Final answer
   x = 1,067.12