Finding the Fourth Proportional to 3,451.55, 5,176.46 and 986.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,451.55 : 5,176.46 = 986.38 : x
2. Step 2: Convert to fraction form
   3,451.55/5,176.46 = 986.38/x
3. Step 3: Cross multiply
   3,451.55x = 5,176.46 × 986.38
4. Step 4: Simplify right side
   3,451.55x = 5,105,969.71
5. Step 5: Solve for x
   x = 5,105,969.71/3,451.55
6. Step 6: Final answer
   x = 1,479.33