Finding the Fourth Proportional to 1,103.09, 1,521.47 and 841.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.09 : 1,521.47 = 841.73 : x
2. Step 2: Convert to fraction form
   1,103.09/1,521.47 = 841.73/x
3. Step 3: Cross multiply
   1,103.09x = 1,521.47 × 841.73
4. Step 4: Simplify right side
   1,103.09x = 1,280,662.73
5. Step 5: Solve for x
   x = 1,280,662.73/1,103.09
6. Step 6: Final answer
   x = 1,160.98