Finding the Fourth Proportional to 2,182.76, 3,012.23 and 1,188.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.76 : 3,012.23 = 1,188.03 : x
2. Step 2: Convert to fraction form
   2,182.76/3,012.23 = 1,188.03/x
3. Step 3: Cross multiply
   2,182.76x = 3,012.23 × 1,188.03
4. Step 4: Simplify right side
   2,182.76x = 3,578,613.67
5. Step 5: Solve for x
   x = 3,578,613.67/2,182.76
6. Step 6: Final answer
   x = 1,639.49