Finding the Fourth Proportional to 2,889.87, 3,986.61 and 1,894.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,889.87 : 3,986.61 = 1,894.71 : x
2. Step 2: Convert to fraction form
   2,889.87/3,986.61 = 1,894.71/x
3. Step 3: Cross multiply
   2,889.87x = 3,986.61 × 1,894.71
4. Step 4: Simplify right side
   2,889.87x = 7,553,469.83
5. Step 5: Solve for x
   x = 7,553,469.83/2,889.87
6. Step 6: Final answer
   x = 2,613.77