Finding the Fourth Proportional to 2,184.80, 3,014.28 and 1,399.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,184.80 : 3,014.28 = 1,399.32 : x
2. Step 2: Convert to fraction form
   2,184.80/3,014.28 = 1,399.32/x
3. Step 3: Cross multiply
   2,184.80x = 3,014.28 × 1,399.32
4. Step 4: Simplify right side
   2,184.80x = 4,217,942.29
5. Step 5: Solve for x
   x = 4,217,942.29/2,184.80
6. Step 6: Final answer
   x = 1,930.59