Finding the Fourth Proportional to 1,111.72, 1,533.68 and 733.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.72 : 1,533.68 = 733.12 : x
2. Step 2: Convert to fraction form
   1,111.72/1,533.68 = 733.12/x
3. Step 3: Cross multiply
   1,111.72x = 1,533.68 × 733.12
4. Step 4: Simplify right side
   1,111.72x = 1,124,371.48
5. Step 5: Solve for x
   x = 1,124,371.48/1,111.72
6. Step 6: Final answer
   x = 1,011.38