Finding the Fourth Proportional to 1,111.42, 1,534.40 and 738.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.42 : 1,534.40 = 738.91 : x
2. Step 2: Convert to fraction form
   1,111.42/1,534.40 = 738.91/x
3. Step 3: Cross multiply
   1,111.42x = 1,534.40 × 738.91
4. Step 4: Simplify right side
   1,111.42x = 1,133,783.50
5. Step 5: Solve for x
   x = 1,133,783.50/1,111.42
6. Step 6: Final answer
   x = 1,020.12