Finding the Fourth Proportional to 1,272.89, 1,756.52 and 713.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272.89 : 1,756.52 = 713.24 : x
2. Step 2: Convert to fraction form
   1,272.89/1,756.52 = 713.24/x
3. Step 3: Cross multiply
   1,272.89x = 1,756.52 × 713.24
4. Step 4: Simplify right side
   1,272.89x = 1,252,807.98
5. Step 5: Solve for x
   x = 1,252,807.98/1,272.89
6. Step 6: Final answer
   x = 984.23