Finding the Fourth Proportional to 1,320.72, 1,983.33 and 1,101.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.72 : 1,983.33 = 1,101.12 : x
2. Step 2: Convert to fraction form
   1,320.72/1,983.33 = 1,101.12/x
3. Step 3: Cross multiply
   1,320.72x = 1,983.33 × 1,101.12
4. Step 4: Simplify right side
   1,320.72x = 2,183,884.33
5. Step 5: Solve for x
   x = 2,183,884.33/1,320.72
6. Step 6: Final answer
   x = 1,653.56