Finding the Fourth Proportional to 2,182.40, 3,011.74 and 1,187.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.40 : 3,011.74 = 1,187.71 : x
2. Step 2: Convert to fraction form
   2,182.40/3,011.74 = 1,187.71/x
3. Step 3: Cross multiply
   2,182.40x = 3,011.74 × 1,187.71
4. Step 4: Simplify right side
   2,182.40x = 3,577,073.72
5. Step 5: Solve for x
   x = 3,577,073.72/2,182.40
6. Step 6: Final answer
   x = 1,639.06