Finding the Fourth Proportional to 1,238.52, 1,709.04 and 714.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.52 : 1,709.04 = 714.48 : x
2. Step 2: Convert to fraction form
   1,238.52/1,709.04 = 714.48/x
3. Step 3: Cross multiply
   1,238.52x = 1,709.04 × 714.48
4. Step 4: Simplify right side
   1,238.52x = 1,221,074.90
5. Step 5: Solve for x
   x = 1,221,074.90/1,238.52
6. Step 6: Final answer
   x = 985.91