Finding the Fourth Proportional to 2,548.24, 3,819.02 and 986.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.24 : 3,819.02 = 986.69 : x
2. Step 2: Convert to fraction form
   2,548.24/3,819.02 = 986.69/x
3. Step 3: Cross multiply
   2,548.24x = 3,819.02 × 986.69
4. Step 4: Simplify right side
   2,548.24x = 3,768,200.86
5. Step 5: Solve for x
   x = 3,768,200.86/2,548.24
6. Step 6: Final answer
   x = 1,478.75