Finding the Fourth Proportional to 2,111.72, 3,166.04 and 1,071.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.72 : 3,166.04 = 1,071.24 : x
2. Step 2: Convert to fraction form
   2,111.72/3,166.04 = 1,071.24/x
3. Step 3: Cross multiply
   2,111.72x = 3,166.04 × 1,071.24
4. Step 4: Simplify right side
   2,111.72x = 3,391,588.69
5. Step 5: Solve for x
   x = 3,391,588.69/2,111.72
6. Step 6: Final answer
   x = 1,606.08