Finding the Fourth Proportional to 2,380.58, 3,284.31 and 1,385.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.58 : 3,284.31 = 1,385.49 : x
2. Step 2: Convert to fraction form
   2,380.58/3,284.31 = 1,385.49/x
3. Step 3: Cross multiply
   2,380.58x = 3,284.31 × 1,385.49
4. Step 4: Simplify right side
   2,380.58x = 4,550,378.66
5. Step 5: Solve for x
   x = 4,550,378.66/2,380.58
6. Step 6: Final answer
   x = 1,911.46