Finding the Fourth Proportional to 1,570.32, 2,167.04 and 871.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570.32 : 2,167.04 = 871.83 : x
2. Step 2: Convert to fraction form
   1,570.32/2,167.04 = 871.83/x
3. Step 3: Cross multiply
   1,570.32x = 2,167.04 × 871.83
4. Step 4: Simplify right side
   1,570.32x = 1,889,286.12
5. Step 5: Solve for x
   x = 1,889,286.12/1,570.32
6. Step 6: Final answer
   x = 1,203.12