Finding the Fourth Proportional to 1,111.78, 1,533.72 and 738.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.78 : 1,533.72 = 738.82 : x
2. Step 2: Convert to fraction form
   1,111.78/1,533.72 = 738.82/x
3. Step 3: Cross multiply
   1,111.78x = 1,533.72 × 738.82
4. Step 4: Simplify right side
   1,111.78x = 1,133,143.01
5. Step 5: Solve for x
   x = 1,133,143.01/1,111.78
6. Step 6: Final answer
   x = 1,019.22