Finding the Fourth Proportional to 2,082.07, 3,119.46 and 1,856.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.07 : 3,119.46 = 1,856.08 : x
2. Step 2: Convert to fraction form
   2,082.07/3,119.46 = 1,856.08/x
3. Step 3: Cross multiply
   2,082.07x = 3,119.46 × 1,856.08
4. Step 4: Simplify right side
   2,082.07x = 5,789,967.32
5. Step 5: Solve for x
   x = 5,789,967.32/2,082.07
6. Step 6: Final answer
   x = 2,780.87