Finding the Fourth Proportional to 2,889.57, 3,989.33 and 1,896.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,889.57 : 3,989.33 = 1,896.59 : x
2. Step 2: Convert to fraction form
   2,889.57/3,989.33 = 1,896.59/x
3. Step 3: Cross multiply
   2,889.57x = 3,989.33 × 1,896.59
4. Step 4: Simplify right side
   2,889.57x = 7,566,093.96
5. Step 5: Solve for x
   x = 7,566,093.96/2,889.57
6. Step 6: Final answer
   x = 2,618.42