Finding the Fourth Proportional to 2,111.46, 3,169.12 and 1,072.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.46 : 3,169.12 = 1,072.18 : x
2. Step 2: Convert to fraction form
   2,111.46/3,169.12 = 1,072.18/x
3. Step 3: Cross multiply
   2,111.46x = 3,169.12 × 1,072.18
4. Step 4: Simplify right side
   2,111.46x = 3,397,867.08
5. Step 5: Solve for x
   x = 3,397,867.08/2,111.46
6. Step 6: Final answer
   x = 1,609.25