Finding the Fourth Proportional to 2,630.52, 3,945.96 and 986.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.52 : 3,945.96 = 986.68 : x
2. Step 2: Convert to fraction form
   2,630.52/3,945.96 = 986.68/x
3. Step 3: Cross multiply
   2,630.52x = 3,945.96 × 986.68
4. Step 4: Simplify right side
   2,630.52x = 3,893,399.81
5. Step 5: Solve for x
   x = 3,893,399.81/2,630.52
6. Step 6: Final answer
   x = 1,480.09