Finding the Fourth Proportional to 1,320.91, 1,822.84 and 731.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.91 : 1,822.84 = 731.46 : x
2. Step 2: Convert to fraction form
   1,320.91/1,822.84 = 731.46/x
3. Step 3: Cross multiply
   1,320.91x = 1,822.84 × 731.46
4. Step 4: Simplify right side
   1,320.91x = 1,333,339.55
5. Step 5: Solve for x
   x = 1,333,339.55/1,320.91
6. Step 6: Final answer
   x = 1,009.41