Finding the Fourth Proportional to 2,082.72, 2,874.88 and 1,786.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.72 : 2,874.88 = 1,786.80 : x
2. Step 2: Convert to fraction form
   2,082.72/2,874.88 = 1,786.80/x
3. Step 3: Cross multiply
   2,082.72x = 2,874.88 × 1,786.80
4. Step 4: Simplify right side
   2,082.72x = 5,136,835.58
5. Step 5: Solve for x
   x = 5,136,835.58/2,082.72
6. Step 6: Final answer
   x = 2,466.41