Finding the Fourth Proportional to 2,453.39, 3,680.06 and 992.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.39 : 3,680.06 = 992.15 : x
2. Step 2: Convert to fraction form
   2,453.39/3,680.06 = 992.15/x
3. Step 3: Cross multiply
   2,453.39x = 3,680.06 × 992.15
4. Step 4: Simplify right side
   2,453.39x = 3,651,148.17
5. Step 5: Solve for x
   x = 3,651,148.17/2,453.39
6. Step 6: Final answer
   x = 1,488.21