Finding the Fourth Proportional to 1,296.63, 1,789.32 and 707.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296.63 : 1,789.32 = 707.18 : x
2. Step 2: Convert to fraction form
   1,296.63/1,789.32 = 707.18/x
3. Step 3: Cross multiply
   1,296.63x = 1,789.32 × 707.18
4. Step 4: Simplify right side
   1,296.63x = 1,265,365.02
5. Step 5: Solve for x
   x = 1,265,365.02/1,296.63
6. Step 6: Final answer
   x = 975.89