Finding the Fourth Proportional to 1,609.72, 2,411.94 and 992.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609.72 : 2,411.94 = 992.14 : x
2. Step 2: Convert to fraction form
   1,609.72/2,411.94 = 992.14/x
3. Step 3: Cross multiply
   1,609.72x = 2,411.94 × 992.14
4. Step 4: Simplify right side
   1,609.72x = 2,392,982.15
5. Step 5: Solve for x
   x = 2,392,982.15/1,609.72
6. Step 6: Final answer
   x = 1,486.58