Finding the Fourth Proportional to 1,238.00, 1,708.49 and 714.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.00 : 1,708.49 = 714.20 : x
2. Step 2: Convert to fraction form
   1,238.00/1,708.49 = 714.20/x
3. Step 3: Cross multiply
   1,238.00x = 1,708.49 × 714.20
4. Step 4: Simplify right side
   1,238.00x = 1,220,196.80
5. Step 5: Solve for x
   x = 1,220,196.80/1,238.00
6. Step 6: Final answer
   x = 985.62