Finding the Fourth Proportional to 1,227.72, 1,842.03 and 569.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.72 : 1,842.03 = 569.91 : x
2. Step 2: Convert to fraction form
   1,227.72/1,842.03 = 569.91/x
3. Step 3: Cross multiply
   1,227.72x = 1,842.03 × 569.91
4. Step 4: Simplify right side
   1,227.72x = 1,049,791.32
5. Step 5: Solve for x
   x = 1,049,791.32/1,227.72
6. Step 6: Final answer
   x = 855.07