Finding the Fourth Proportional to 2,182.88, 3,012.39 and 1,188.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.88 : 3,012.39 = 1,188.17 : x
2. Step 2: Convert to fraction form
   2,182.88/3,012.39 = 1,188.17/x
3. Step 3: Cross multiply
   2,182.88x = 3,012.39 × 1,188.17
4. Step 4: Simplify right side
   2,182.88x = 3,579,231.43
5. Step 5: Solve for x
   x = 3,579,231.43/2,182.88
6. Step 6: Final answer
   x = 1,639.68