Finding the Fourth Proportional to 2,589.89, 3,886.78 and 1,898.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589.89 : 3,886.78 = 1,898.32 : x
2. Step 2: Convert to fraction form
   2,589.89/3,886.78 = 1,898.32/x
3. Step 3: Cross multiply
   2,589.89x = 3,886.78 × 1,898.32
4. Step 4: Simplify right side
   2,589.89x = 7,378,352.21
5. Step 5: Solve for x
   x = 7,378,352.21/2,589.89
6. Step 6: Final answer
   x = 2,848.91