Finding the Fourth Proportional to 1,296.59, 1,789.32 and 707.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296.59 : 1,789.32 = 707.15 : x
2. Step 2: Convert to fraction form
   1,296.59/1,789.32 = 707.15/x
3. Step 3: Cross multiply
   1,296.59x = 1,789.32 × 707.15
4. Step 4: Simplify right side
   1,296.59x = 1,265,308.69
5. Step 5: Solve for x
   x = 1,265,308.69/1,296.59
6. Step 6: Final answer
   x = 975.88