Finding the Fourth Proportional to 2,630.82, 3,944.52 and 985.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.82 : 3,944.52 = 985.98 : x
2. Step 2: Convert to fraction form
   2,630.82/3,944.52 = 985.98/x
3. Step 3: Cross multiply
   2,630.82x = 3,944.52 × 985.98
4. Step 4: Simplify right side
   2,630.82x = 3,889,217.83
5. Step 5: Solve for x
   x = 3,889,217.83/2,630.82
6. Step 6: Final answer
   x = 1,478.33