Finding the Fourth Proportional to 1,296.72, 1,789.46 and 707.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296.72 : 1,789.46 = 707.25 : x
2. Step 2: Convert to fraction form
   1,296.72/1,789.46 = 707.25/x
3. Step 3: Cross multiply
   1,296.72x = 1,789.46 × 707.25
4. Step 4: Simplify right side
   1,296.72x = 1,265,595.59
5. Step 5: Solve for x
   x = 1,265,595.59/1,296.72
6. Step 6: Final answer
   x = 976.00