Finding the Fourth Proportional to 3,881.67, 5,823.59 and 1,286.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,881.67 : 5,823.59 = 1,286.43 : x
2. Step 2: Convert to fraction form
   3,881.67/5,823.59 = 1,286.43/x
3. Step 3: Cross multiply
   3,881.67x = 5,823.59 × 1,286.43
4. Step 4: Simplify right side
   3,881.67x = 7,491,634.45
5. Step 5: Solve for x
   x = 7,491,634.45/3,881.67
6. Step 6: Final answer
   x = 1,930.00