Finding the Fourth Proportional to 1,272.82, 1,756.57 and 713.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272.82 : 1,756.57 = 713.48 : x
2. Step 2: Convert to fraction form
   1,272.82/1,756.57 = 713.48/x
3. Step 3: Cross multiply
   1,272.82x = 1,756.57 × 713.48
4. Step 4: Simplify right side
   1,272.82x = 1,253,268.33
5. Step 5: Solve for x
   x = 1,253,268.33/1,272.82
6. Step 6: Final answer
   x = 984.64