Finding the Fourth Proportional to 2,172.29, 3,256.07 and 710.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.29 : 3,256.07 = 710.37 : x
2. Step 2: Convert to fraction form
   2,172.29/3,256.07 = 710.37/x
3. Step 3: Cross multiply
   2,172.29x = 3,256.07 × 710.37
4. Step 4: Simplify right side
   2,172.29x = 2,313,010.89
5. Step 5: Solve for x
   x = 2,313,010.89/2,172.29
6. Step 6: Final answer
   x = 1,064.78