Finding the Fourth Proportional to 2,209.46, 3,310.08 and 1,111.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.46 : 3,310.08 = 1,111.17 : x
2. Step 2: Convert to fraction form
   2,209.46/3,310.08 = 1,111.17/x
3. Step 3: Cross multiply
   2,209.46x = 3,310.08 × 1,111.17
4. Step 4: Simplify right side
   2,209.46x = 3,678,061.59
5. Step 5: Solve for x
   x = 3,678,061.59/2,209.46
6. Step 6: Final answer
   x = 1,664.69