Finding the Fourth Proportional to 2,180.12, 3,007.74 and 1,340.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.12 : 3,007.74 = 1,340.15 : x
2. Step 2: Convert to fraction form
   2,180.12/3,007.74 = 1,340.15/x
3. Step 3: Cross multiply
   2,180.12x = 3,007.74 × 1,340.15
4. Step 4: Simplify right side
   2,180.12x = 4,030,807.72
5. Step 5: Solve for x
   x = 4,030,807.72/2,180.12
6. Step 6: Final answer
   x = 1,848.90