Finding the Fourth Proportional to 1,103.69, 1,521.38 and 823.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.69 : 1,521.38 = 823.94 : x
2. Step 2: Convert to fraction form
   1,103.69/1,521.38 = 823.94/x
3. Step 3: Cross multiply
   1,103.69x = 1,521.38 × 823.94
4. Step 4: Simplify right side
   1,103.69x = 1,253,526.00
5. Step 5: Solve for x
   x = 1,253,526.00/1,103.69
6. Step 6: Final answer
   x = 1,135.76