Finding the Fourth Proportional to 2,082.60, 3,123.72 and 1,216.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.60 : 3,123.72 = 1,216.44 : x
2. Step 2: Convert to fraction form
   2,082.60/3,123.72 = 1,216.44/x
3. Step 3: Cross multiply
   2,082.60x = 3,123.72 × 1,216.44
4. Step 4: Simplify right side
   2,082.60x = 3,799,817.96
5. Step 5: Solve for x
   x = 3,799,817.96/2,082.60
6. Step 6: Final answer
   x = 1,824.55