Finding the Fourth Proportional to 1,296.06, 1,788.59 and 706.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296.06 : 1,788.59 = 706.61 : x
2. Step 2: Convert to fraction form
   1,296.06/1,788.59 = 706.61/x
3. Step 3: Cross multiply
   1,296.06x = 1,788.59 × 706.61
4. Step 4: Simplify right side
   1,296.06x = 1,263,823.10
5. Step 5: Solve for x
   x = 1,263,823.10/1,296.06
6. Step 6: Final answer
   x = 975.13