Finding the Fourth Proportional to 1,362.30, 1,879.94 and 772.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.30 : 1,879.94 = 772.82 : x
2. Step 2: Convert to fraction form
   1,362.30/1,879.94 = 772.82/x
3. Step 3: Cross multiply
   1,362.30x = 1,879.94 × 772.82
4. Step 4: Simplify right side
   1,362.30x = 1,452,855.23
5. Step 5: Solve for x
   x = 1,452,855.23/1,362.30
6. Step 6: Final answer
   x = 1,066.47