Finding the Fourth Proportional to 1,637.14, 2,456.69 and 712.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,637.14 : 2,456.69 = 712.72 : x
2. Step 2: Convert to fraction form
   1,637.14/2,456.69 = 712.72/x
3. Step 3: Cross multiply
   1,637.14x = 2,456.69 × 712.72
4. Step 4: Simplify right side
   1,637.14x = 1,750,932.10
5. Step 5: Solve for x
   x = 1,750,932.10/1,637.14
6. Step 6: Final answer
   x = 1,069.51