Finding the Fourth Proportional to 1,238.73, 1,709.31 and 741.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.73 : 1,709.31 = 741.30 : x
2. Step 2: Convert to fraction form
   1,238.73/1,709.31 = 741.30/x
3. Step 3: Cross multiply
   1,238.73x = 1,709.31 × 741.30
4. Step 4: Simplify right side
   1,238.73x = 1,267,111.50
5. Step 5: Solve for x
   x = 1,267,111.50/1,238.73
6. Step 6: Final answer
   x = 1,022.91