Finding the Fourth Proportional to 2,179.16, 3,007.71 and 1,340.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.16 : 3,007.71 = 1,340.57 : x
2. Step 2: Convert to fraction form
   2,179.16/3,007.71 = 1,340.57/x
3. Step 3: Cross multiply
   2,179.16x = 3,007.71 × 1,340.57
4. Step 4: Simplify right side
   2,179.16x = 4,032,045.79
5. Step 5: Solve for x
   x = 4,032,045.79/2,179.16
6. Step 6: Final answer
   x = 1,850.28