Finding the Fourth Proportional to 1,320.89, 1,822.83 and 731.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.89 : 1,822.83 = 731.42 : x
2. Step 2: Convert to fraction form
   1,320.89/1,822.83 = 731.42/x
3. Step 3: Cross multiply
   1,320.89x = 1,822.83 × 731.42
4. Step 4: Simplify right side
   1,320.89x = 1,333,254.32
5. Step 5: Solve for x
   x = 1,333,254.32/1,320.89
6. Step 6: Final answer
   x = 1,009.36