Finding the Fourth Proportional to 1,104.15, 1,522.89 and 772.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,104.15 : 1,522.89 = 772.23 : x
2. Step 2: Convert to fraction form
   1,104.15/1,522.89 = 772.23/x
3. Step 3: Cross multiply
   1,104.15x = 1,522.89 × 772.23
4. Step 4: Simplify right side
   1,104.15x = 1,176,021.34
5. Step 5: Solve for x
   x = 1,176,021.34/1,104.15
6. Step 6: Final answer
   x = 1,065.09