Finding the Fourth Proportional to 1,111.76, 1,534.56 and 738.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.76 : 1,534.56 = 738.80 : x
2. Step 2: Convert to fraction form
   1,111.76/1,534.56 = 738.80/x
3. Step 3: Cross multiply
   1,111.76x = 1,534.56 × 738.80
4. Step 4: Simplify right side
   1,111.76x = 1,133,732.93
5. Step 5: Solve for x
   x = 1,133,732.93/1,111.76
6. Step 6: Final answer
   x = 1,019.76