Finding the Fourth Proportional to 1,267.89, 1,749.69 and 708.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,267.89 : 1,749.69 = 708.35 : x
2. Step 2: Convert to fraction form
   1,267.89/1,749.69 = 708.35/x
3. Step 3: Cross multiply
   1,267.89x = 1,749.69 × 708.35
4. Step 4: Simplify right side
   1,267.89x = 1,239,392.91
5. Step 5: Solve for x
   x = 1,239,392.91/1,267.89
6. Step 6: Final answer
   x = 977.52