Finding the Fourth Proportional to 2,636.00, 3,953.60 and 992.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.00 : 3,953.60 = 992.16 : x
2. Step 2: Convert to fraction form
   2,636.00/3,953.60 = 992.16/x
3. Step 3: Cross multiply
   2,636.00x = 3,953.60 × 992.16
4. Step 4: Simplify right side
   2,636.00x = 3,922,602.54
5. Step 5: Solve for x
   x = 3,922,602.54/2,636.00
6. Step 6: Final answer
   x = 1,488.09