Finding the Fourth Proportional to 3,914.25, 5,871.37 and 992.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.25 : 5,871.37 = 992.79 : x
2. Step 2: Convert to fraction form
   3,914.25/5,871.37 = 992.79/x
3. Step 3: Cross multiply
   3,914.25x = 5,871.37 × 992.79
4. Step 4: Simplify right side
   3,914.25x = 5,829,037.42
5. Step 5: Solve for x
   x = 5,829,037.42/3,914.25
6. Step 6: Final answer
   x = 1,489.18