Finding the Fourth Proportional to 2,180.40, 3,008.72 and 1,295.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.40 : 3,008.72 = 1,295.92 : x
2. Step 2: Convert to fraction form
   2,180.40/3,008.72 = 1,295.92/x
3. Step 3: Cross multiply
   2,180.40x = 3,008.72 × 1,295.92
4. Step 4: Simplify right side
   2,180.40x = 3,899,060.42
5. Step 5: Solve for x
   x = 3,899,060.42/2,180.40
6. Step 6: Final answer
   x = 1,788.23