Finding the Fourth Proportional to 3,100.39, 4,650.69 and 992.44

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.39 : 4,650.69 = 992.44 : x
2. Step 2: Convert to fraction form
   3,100.39/4,650.69 = 992.44/x
3. Step 3: Cross multiply
   3,100.39x = 4,650.69 × 992.44
4. Step 4: Simplify right side
   3,100.39x = 4,615,530.78
5. Step 5: Solve for x
   x = 4,615,530.78/3,100.39
6. Step 6: Final answer
   x = 1,488.70