Finding the Fourth Proportional to 1,320.54, 1,822.32 and 723.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.54 : 1,822.32 = 723.02 : x
2. Step 2: Convert to fraction form
   1,320.54/1,822.32 = 723.02/x
3. Step 3: Cross multiply
   1,320.54x = 1,822.32 × 723.02
4. Step 4: Simplify right side
   1,320.54x = 1,317,564.69
5. Step 5: Solve for x
   x = 1,317,564.69/1,320.54
6. Step 6: Final answer
   x = 997.75