Finding the Fourth Proportional to 2,082.78, 3,126.65 and 1,650.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.78 : 3,126.65 = 1,650.30 : x
2. Step 2: Convert to fraction form
   2,082.78/3,126.65 = 1,650.30/x
3. Step 3: Cross multiply
   2,082.78x = 3,126.65 × 1,650.30
4. Step 4: Simplify right side
   2,082.78x = 5,159,910.50
5. Step 5: Solve for x
   x = 5,159,910.50/2,082.78
6. Step 6: Final answer
   x = 2,477.42