Finding the Fourth Proportional to 1,238.04, 1,708.38 and 714.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.04 : 1,708.38 = 714.06 : x
2. Step 2: Convert to fraction form
   1,238.04/1,708.38 = 714.06/x
3. Step 3: Cross multiply
   1,238.04x = 1,708.38 × 714.06
4. Step 4: Simplify right side
   1,238.04x = 1,219,885.82
5. Step 5: Solve for x
   x = 1,219,885.82/1,238.04
6. Step 6: Final answer
   x = 985.34