Finding the Fourth Proportional to 2,011.76, 3,019.56 and 986.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.76 : 3,019.56 = 986.48 : x
2. Step 2: Convert to fraction form
   2,011.76/3,019.56 = 986.48/x
3. Step 3: Cross multiply
   2,011.76x = 3,019.56 × 986.48
4. Step 4: Simplify right side
   2,011.76x = 2,978,735.55
5. Step 5: Solve for x
   x = 2,978,735.55/2,011.76
6. Step 6: Final answer
   x = 1,480.66