Finding the Fourth Proportional to 2,380.76, 3,284.37 and 1,385.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.76 : 3,284.37 = 1,385.46 : x
2. Step 2: Convert to fraction form
   2,380.76/3,284.37 = 1,385.46/x
3. Step 3: Cross multiply
   2,380.76x = 3,284.37 × 1,385.46
4. Step 4: Simplify right side
   2,380.76x = 4,550,363.26
5. Step 5: Solve for x
   x = 4,550,363.26/2,380.76
6. Step 6: Final answer
   x = 1,911.31