Finding the Fourth Proportional to 1,238.88, 1,708.69 and 741.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.88 : 1,708.69 = 741.42 : x
2. Step 2: Convert to fraction form
   1,238.88/1,708.69 = 741.42/x
3. Step 3: Cross multiply
   1,238.88x = 1,708.69 × 741.42
4. Step 4: Simplify right side
   1,238.88x = 1,266,855.09
5. Step 5: Solve for x
   x = 1,266,855.09/1,238.88
6. Step 6: Final answer
   x = 1,022.58