Finding the Fourth Proportional to 2,378.31, 3,282.83 and 1,383.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,378.31 : 3,282.83 = 1,383.40 : x
2. Step 2: Convert to fraction form
   2,378.31/3,282.83 = 1,383.40/x
3. Step 3: Cross multiply
   2,378.31x = 3,282.83 × 1,383.40
4. Step 4: Simplify right side
   2,378.31x = 4,541,467.02
5. Step 5: Solve for x
   x = 4,541,467.02/2,378.31
6. Step 6: Final answer
   x = 1,909.54