Finding the Fourth Proportional to 1,267.71, 1,749.33 and 708.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,267.71 : 1,749.33 = 708.15 : x
2. Step 2: Convert to fraction form
   1,267.71/1,749.33 = 708.15/x
3. Step 3: Cross multiply
   1,267.71x = 1,749.33 × 708.15
4. Step 4: Simplify right side
   1,267.71x = 1,238,788.04
5. Step 5: Solve for x
   x = 1,238,788.04/1,267.71
6. Step 6: Final answer
   x = 977.19