Finding the Fourth Proportional to 3,399.32, 4,690.78 and 1,886.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,399.32 : 4,690.78 = 1,886.71 : x
2. Step 2: Convert to fraction form
   3,399.32/4,690.78 = 1,886.71/x
3. Step 3: Cross multiply
   3,399.32x = 4,690.78 × 1,886.71
4. Step 4: Simplify right side
   3,399.32x = 8,850,133.89
5. Step 5: Solve for x
   x = 8,850,133.89/3,399.32
6. Step 6: Final answer
   x = 2,603.50