Finding the Fourth Proportional to 3,728.50, 5,146.41 and 2,486.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728.50 : 5,146.41 = 2,486.50 : x
2. Step 2: Convert to fraction form
   3,728.50/5,146.41 = 2,486.50/x
3. Step 3: Cross multiply
   3,728.50x = 5,146.41 × 2,486.50
4. Step 4: Simplify right side
   3,728.50x = 12,796,548.47
5. Step 5: Solve for x
   x = 12,796,548.47/3,728.50
6. Step 6: Final answer
   x = 3,432.09