Finding the Fourth Proportional to 1,321.38, 1,822.86 and 873.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321.38 : 1,822.86 = 873.42 : x
2. Step 2: Convert to fraction form
   1,321.38/1,822.86 = 873.42/x
3. Step 3: Cross multiply
   1,321.38x = 1,822.86 × 873.42
4. Step 4: Simplify right side
   1,321.38x = 1,592,113.27
5. Step 5: Solve for x
   x = 1,592,113.27/1,321.38
6. Step 6: Final answer
   x = 1,204.89