Finding the Fourth Proportional to 2,380.33, 3,284.83 and 1,318.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.33 : 3,284.83 = 1,318.12 : x
2. Step 2: Convert to fraction form
   2,380.33/3,284.83 = 1,318.12/x
3. Step 3: Cross multiply
   2,380.33x = 3,284.83 × 1,318.12
4. Step 4: Simplify right side
   2,380.33x = 4,329,800.12
5. Step 5: Solve for x
   x = 4,329,800.12/2,380.33
6. Step 6: Final answer
   x = 1,818.99