Finding the Fourth Proportional to 2,014.80, 3,015.72 and 1,869

Step by Step Solution

1. Step 1: Write the proportion equation
   2,014.80 : 3,015.72 = 1,869 : x
2. Step 2: Convert to fraction form
   2,014.80/3,015.72 = 1,869/x
3. Step 3: Cross multiply
   2,014.80x = 3,015.72 × 1,869
4. Step 4: Simplify right side
   2,014.80x = 5,636,380.68
5. Step 5: Solve for x
   x = 5,636,380.68/2,014.80
6. Step 6: Final answer
   x = 2,797.49