Finding the Fourth Proportional to 2,168.81, 2,992.96 and 1,174.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.81 : 2,992.96 = 1,174.09 : x
2. Step 2: Convert to fraction form
   2,168.81/2,992.96 = 1,174.09/x
3. Step 3: Cross multiply
   2,168.81x = 2,992.96 × 1,174.09
4. Step 4: Simplify right side
   2,168.81x = 3,513,999.93
5. Step 5: Solve for x
   x = 3,513,999.93/2,168.81
6. Step 6: Final answer
   x = 1,620.24