Finding the Fourth Proportional to 3,914.06, 5,871.19 and 992.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.06 : 5,871.19 = 992.59 : x
2. Step 2: Convert to fraction form
   3,914.06/5,871.19 = 992.59/x
3. Step 3: Cross multiply
   3,914.06x = 5,871.19 × 992.59
4. Step 4: Simplify right side
   3,914.06x = 5,827,667.32
5. Step 5: Solve for x
   x = 5,827,667.32/3,914.06
6. Step 6: Final answer
   x = 1,488.91