Finding the Fourth Proportional to 2,082.27, 2,870.55 and 1,285.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.27 : 2,870.55 = 1,285.06 : x
2. Step 2: Convert to fraction form
   2,082.27/2,870.55 = 1,285.06/x
3. Step 3: Cross multiply
   2,082.27x = 2,870.55 × 1,285.06
4. Step 4: Simplify right side
   2,082.27x = 3,688,808.20
5. Step 5: Solve for x
   x = 3,688,808.20/2,082.27
6. Step 6: Final answer
   x = 1,771.54