Finding the Fourth Proportional to 2,179.31, 3,005.90 and 1,340.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.31 : 3,005.90 = 1,340.49 : x
2. Step 2: Convert to fraction form
   2,179.31/3,005.90 = 1,340.49/x
3. Step 3: Cross multiply
   2,179.31x = 3,005.90 × 1,340.49
4. Step 4: Simplify right side
   2,179.31x = 4,029,378.89
5. Step 5: Solve for x
   x = 4,029,378.89/2,179.31
6. Step 6: Final answer
   x = 1,848.92