Finding the Fourth Proportional to 2,845.69, 4,269.16 and 871.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,845.69 : 4,269.16 = 871.33 : x
2. Step 2: Convert to fraction form
   2,845.69/4,269.16 = 871.33/x
3. Step 3: Cross multiply
   2,845.69x = 4,269.16 × 871.33
4. Step 4: Simplify right side
   2,845.69x = 3,719,857.86
5. Step 5: Solve for x
   x = 3,719,857.86/2,845.69
6. Step 6: Final answer
   x = 1,307.19