Finding the Fourth Proportional to 1,355.27, 1,868.94 and 824.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.27 : 1,868.94 = 824.22 : x
2. Step 2: Convert to fraction form
   1,355.27/1,868.94 = 824.22/x
3. Step 3: Cross multiply
   1,355.27x = 1,868.94 × 824.22
4. Step 4: Simplify right side
   1,355.27x = 1,540,417.73
5. Step 5: Solve for x
   x = 1,540,417.73/1,355.27
6. Step 6: Final answer
   x = 1,136.62