Finding the Fourth Proportional to 2,179.78, 3,007.86 and 1,295.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.78 : 3,007.86 = 1,295.46 : x
2. Step 2: Convert to fraction form
   2,179.78/3,007.86 = 1,295.46/x
3. Step 3: Cross multiply
   2,179.78x = 3,007.86 × 1,295.46
4. Step 4: Simplify right side
   2,179.78x = 3,896,562.32
5. Step 5: Solve for x
   x = 3,896,562.32/2,179.78
6. Step 6: Final answer
   x = 1,787.60