Finding the Fourth Proportional to 1,271.69, 1,908.52 and 569.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.69 : 1,908.52 = 569.12 : x
2. Step 2: Convert to fraction form
   1,271.69/1,908.52 = 569.12/x
3. Step 3: Cross multiply
   1,271.69x = 1,908.52 × 569.12
4. Step 4: Simplify right side
   1,271.69x = 1,086,176.67
5. Step 5: Solve for x
   x = 1,086,176.67/1,271.69
6. Step 6: Final answer
   x = 854.12