Finding the Fourth Proportional to 2,635.82, 3,951.28 and 993.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.82 : 3,951.28 = 993.45 : x
2. Step 2: Convert to fraction form
   2,635.82/3,951.28 = 993.45/x
3. Step 3: Cross multiply
   2,635.82x = 3,951.28 × 993.45
4. Step 4: Simplify right side
   2,635.82x = 3,925,399.12
5. Step 5: Solve for x
   x = 3,925,399.12/2,635.82
6. Step 6: Final answer
   x = 1,489.25