Finding the Fourth Proportional to 1,022.56, 1,410.42 and 773.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,022.56 : 1,410.42 = 773.08 : x
2. Step 2: Convert to fraction form
   1,022.56/1,410.42 = 773.08/x
3. Step 3: Cross multiply
   1,022.56x = 1,410.42 × 773.08
4. Step 4: Simplify right side
   1,022.56x = 1,090,367.49
5. Step 5: Solve for x
   x = 1,090,367.49/1,022.56
6. Step 6: Final answer
   x = 1,066.31