Finding the Fourth Proportional to 3,886.86, 5,830.35 and 965.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886.86 : 5,830.35 = 965.18 : x
2. Step 2: Convert to fraction form
   3,886.86/5,830.35 = 965.18/x
3. Step 3: Cross multiply
   3,886.86x = 5,830.35 × 965.18
4. Step 4: Simplify right side
   3,886.86x = 5,627,308.06
5. Step 5: Solve for x
   x = 5,627,308.06/3,886.86
6. Step 6: Final answer
   x = 1,447.78