Finding the Fourth Proportional to 1,022.17, 1,411.02 and 773.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,022.17 : 1,411.02 = 773.56 : x
2. Step 2: Convert to fraction form
   1,022.17/1,411.02 = 773.56/x
3. Step 3: Cross multiply
   1,022.17x = 1,411.02 × 773.56
4. Step 4: Simplify right side
   1,022.17x = 1,091,508.63
5. Step 5: Solve for x
   x = 1,091,508.63/1,022.17
6. Step 6: Final answer
   x = 1,067.83