Finding the Fourth Proportional to 1,271.53, 1,754.72 and 712.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.53 : 1,754.72 = 712.02 : x
2. Step 2: Convert to fraction form
   1,271.53/1,754.72 = 712.02/x
3. Step 3: Cross multiply
   1,271.53x = 1,754.72 × 712.02
4. Step 4: Simplify right side
   1,271.53x = 1,249,395.73
5. Step 5: Solve for x
   x = 1,249,395.73/1,271.53
6. Step 6: Final answer
   x = 982.59