Finding the Fourth Proportional to 2,179.97, 3,008.40 and 1,185.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.97 : 3,008.40 = 1,185.30 : x
2. Step 2: Convert to fraction form
   2,179.97/3,008.40 = 1,185.30/x
3. Step 3: Cross multiply
   2,179.97x = 3,008.40 × 1,185.30
4. Step 4: Simplify right side
   2,179.97x = 3,565,856.52
5. Step 5: Solve for x
   x = 3,565,856.52/2,179.97
6. Step 6: Final answer
   x = 1,635.74