Finding the Fourth Proportional to 2,635.50, 3,953.94 and 992.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.50 : 3,953.94 = 992.06 : x
2. Step 2: Convert to fraction form
   2,635.50/3,953.94 = 992.06/x
3. Step 3: Cross multiply
   2,635.50x = 3,953.94 × 992.06
4. Step 4: Simplify right side
   2,635.50x = 3,922,545.72
5. Step 5: Solve for x
   x = 3,922,545.72/2,635.50
6. Step 6: Final answer
   x = 1,488.35