Finding the Fourth Proportional to 2,080.57, 2,871.36 and 1,196.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.57 : 2,871.36 = 1,196.66 : x
2. Step 2: Convert to fraction form
   2,080.57/2,871.36 = 1,196.66/x
3. Step 3: Cross multiply
   2,080.57x = 2,871.36 × 1,196.66
4. Step 4: Simplify right side
   2,080.57x = 3,436,034.48
5. Step 5: Solve for x
   x = 3,436,034.48/2,080.57
6. Step 6: Final answer
   x = 1,651.49