Finding the Fourth Proportional to 1,569.71, 2,166.27 and 871.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.71 : 2,166.27 = 871.04 : x
2. Step 2: Convert to fraction form
   1,569.71/2,166.27 = 871.04/x
3. Step 3: Cross multiply
   1,569.71x = 2,166.27 × 871.04
4. Step 4: Simplify right side
   1,569.71x = 1,886,907.82
5. Step 5: Solve for x
   x = 1,886,907.82/1,569.71
6. Step 6: Final answer
   x = 1,202.07