Finding the Fourth Proportional to 2,182.53, 3,012.15 and 1,286.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.53 : 3,012.15 = 1,286.47 : x
2. Step 2: Convert to fraction form
   2,182.53/3,012.15 = 1,286.47/x
3. Step 3: Cross multiply
   2,182.53x = 3,012.15 × 1,286.47
4. Step 4: Simplify right side
   2,182.53x = 3,875,040.61
5. Step 5: Solve for x
   x = 3,875,040.61/2,182.53
6. Step 6: Final answer
   x = 1,775.48