Finding the Fourth Proportional to 1,320.99, 1,822.89 and 731.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.99 : 1,822.89 = 731.49 : x
2. Step 2: Convert to fraction form
   1,320.99/1,822.89 = 731.49/x
3. Step 3: Cross multiply
   1,320.99x = 1,822.89 × 731.49
4. Step 4: Simplify right side
   1,320.99x = 1,333,425.81
5. Step 5: Solve for x
   x = 1,333,425.81/1,320.99
6. Step 6: Final answer
   x = 1,009.41