Finding the Fourth Proportional to 1,218.89, 1,827.50 and 569.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218.89 : 1,827.50 = 569.27 : x
2. Step 2: Convert to fraction form
   1,218.89/1,827.50 = 569.27/x
3. Step 3: Cross multiply
   1,218.89x = 1,827.50 × 569.27
4. Step 4: Simplify right side
   1,218.89x = 1,040,328.94
5. Step 5: Solve for x
   x = 1,040,328.94/1,218.89
6. Step 6: Final answer
   x = 853.51