Finding the Fourth Proportional to 1,295.82, 1,788.52 and 772.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,295.82 : 1,788.52 = 772.16 : x
2. Step 2: Convert to fraction form
   1,295.82/1,788.52 = 772.16/x
3. Step 3: Cross multiply
   1,295.82x = 1,788.52 × 772.16
4. Step 4: Simplify right side
   1,295.82x = 1,381,023.60
5. Step 5: Solve for x
   x = 1,381,023.60/1,295.82
6. Step 6: Final answer
   x = 1,065.75