Finding the Fourth Proportional to 2,449.50, 3,380.31 and 1,345.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,449.50 : 3,380.31 = 1,345.50 : x
2. Step 2: Convert to fraction form
   2,449.50/3,380.31 = 1,345.50/x
3. Step 3: Cross multiply
   2,449.50x = 3,380.31 × 1,345.50
4. Step 4: Simplify right side
   2,449.50x = 4,548,207.11
5. Step 5: Solve for x
   x = 4,548,207.11/2,449.50
6. Step 6: Final answer
   x = 1,856.79