Finding the Fourth Proportional to 1,055.27, 1,581.56 and 773.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.27 : 1,581.56 = 773.48 : x
2. Step 2: Convert to fraction form
   1,055.27/1,581.56 = 773.48/x
3. Step 3: Cross multiply
   1,055.27x = 1,581.56 × 773.48
4. Step 4: Simplify right side
   1,055.27x = 1,223,308.02
5. Step 5: Solve for x
   x = 1,223,308.02/1,055.27
6. Step 6: Final answer
   x = 1,159.23