Finding the Fourth Proportional to 3,889.10, 5,830.89 and 1,806.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,889.10 : 5,830.89 = 1,806.89 : x
2. Step 2: Convert to fraction form
   3,889.10/5,830.89 = 1,806.89/x
3. Step 3: Cross multiply
   3,889.10x = 5,830.89 × 1,806.89
4. Step 4: Simplify right side
   3,889.10x = 10,535,747.68
5. Step 5: Solve for x
   x = 10,535,747.68/3,889.10
6. Step 6: Final answer
   x = 2,709.05