Finding the Fourth Proportional to 3,884.39, 5,827.50 and 1,287.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,884.39 : 5,827.50 = 1,287.33 : x
2. Step 2: Convert to fraction form
   3,884.39/5,827.50 = 1,287.33/x
3. Step 3: Cross multiply
   3,884.39x = 5,827.50 × 1,287.33
4. Step 4: Simplify right side
   3,884.39x = 7,501,915.58
5. Step 5: Solve for x
   x = 7,501,915.58/3,884.39
6. Step 6: Final answer
   x = 1,931.30