Finding the Fourth Proportional to 1,055.18, 1,581.12 and 567.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.18 : 1,581.12 = 567.56 : x
2. Step 2: Convert to fraction form
   1,055.18/1,581.12 = 567.56/x
3. Step 3: Cross multiply
   1,055.18x = 1,581.12 × 567.56
4. Step 4: Simplify right side
   1,055.18x = 897,380.47
5. Step 5: Solve for x
   x = 897,380.47/1,055.18
6. Step 6: Final answer
   x = 850.45