Finding the Fourth Proportional to 2,178.86, 3,007.26 and 1,294.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.86 : 3,007.26 = 1,294.49 : x
2. Step 2: Convert to fraction form
   2,178.86/3,007.26 = 1,294.49/x
3. Step 3: Cross multiply
   2,178.86x = 3,007.26 × 1,294.49
4. Step 4: Simplify right side
   2,178.86x = 3,892,880.37
5. Step 5: Solve for x
   x = 3,892,880.37/2,178.86
6. Step 6: Final answer
   x = 1,786.66