Finding the Fourth Proportional to 2,082.12, 3,123.12 and 1,715.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.12 : 3,123.12 = 1,715.76 : x
2. Step 2: Convert to fraction form
   2,082.12/3,123.12 = 1,715.76/x
3. Step 3: Cross multiply
   2,082.12x = 3,123.12 × 1,715.76
4. Step 4: Simplify right side
   2,082.12x = 5,358,524.37
5. Step 5: Solve for x
   x = 5,358,524.37/2,082.12
6. Step 6: Final answer
   x = 2,573.59