Finding the Fourth Proportional to 2,041.60, 3,061.36 and 871.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,041.60 : 3,061.36 = 871.16 : x
2. Step 2: Convert to fraction form
   2,041.60/3,061.36 = 871.16/x
3. Step 3: Cross multiply
   2,041.60x = 3,061.36 × 871.16
4. Step 4: Simplify right side
   2,041.60x = 2,666,934.38
5. Step 5: Solve for x
   x = 2,666,934.38/2,041.60
6. Step 6: Final answer
   x = 1,306.30