Finding the Fourth Proportional to 2,453.67, 3,680.69 and 992.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.67 : 3,680.69 = 992.79 : x
2. Step 2: Convert to fraction form
   2,453.67/3,680.69 = 992.79/x
3. Step 3: Cross multiply
   2,453.67x = 3,680.69 × 992.79
4. Step 4: Simplify right side
   2,453.67x = 3,654,147.26
5. Step 5: Solve for x
   x = 3,654,147.26/2,453.67
6. Step 6: Final answer
   x = 1,489.26