Finding the Fourth Proportional to 1,238.89, 1,709.69 and 741.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.89 : 1,709.69 = 741.55 : x
2. Step 2: Convert to fraction form
   1,238.89/1,709.69 = 741.55/x
3. Step 3: Cross multiply
   1,238.89x = 1,709.69 × 741.55
4. Step 4: Simplify right side
   1,238.89x = 1,267,808.36
5. Step 5: Solve for x
   x = 1,267,808.36/1,238.89
6. Step 6: Final answer
   x = 1,023.35