Finding the Fourth Proportional to 2,179.32, 3,007.17 and 1,294.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.32 : 3,007.17 = 1,294.80 : x
2. Step 2: Convert to fraction form
   2,179.32/3,007.17 = 1,294.80/x
3. Step 3: Cross multiply
   2,179.32x = 3,007.17 × 1,294.80
4. Step 4: Simplify right side
   2,179.32x = 3,893,683.72
5. Step 5: Solve for x
   x = 3,893,683.72/2,179.32
6. Step 6: Final answer
   x = 1,786.65