Finding the Fourth Proportional to 3,886.79, 5,830.25 and 965.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886.79 : 5,830.25 = 965.12 : x
2. Step 2: Convert to fraction form
   3,886.79/5,830.25 = 965.12/x
3. Step 3: Cross multiply
   3,886.79x = 5,830.25 × 965.12
4. Step 4: Simplify right side
   3,886.79x = 5,626,856.90
5. Step 5: Solve for x
   x = 5,626,856.90/3,886.79
6. Step 6: Final answer
   x = 1,447.69