Finding the Fourth Proportional to 1,296.76, 1,789.56 and 707.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296.76 : 1,789.56 = 707.29 : x
2. Step 2: Convert to fraction form
   1,296.76/1,789.56 = 707.29/x
3. Step 3: Cross multiply
   1,296.76x = 1,789.56 × 707.29
4. Step 4: Simplify right side
   1,296.76x = 1,265,737.89
5. Step 5: Solve for x
   x = 1,265,737.89/1,296.76
6. Step 6: Final answer
   x = 976.08