Finding the Fourth Proportional to 2,211.98, 3,315.65 and 1,114.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211.98 : 3,315.65 = 1,114.04 : x
2. Step 2: Convert to fraction form
   2,211.98/3,315.65 = 1,114.04/x
3. Step 3: Cross multiply
   2,211.98x = 3,315.65 × 1,114.04
4. Step 4: Simplify right side
   2,211.98x = 3,693,761.16
5. Step 5: Solve for x
   x = 3,693,761.16/2,211.98
6. Step 6: Final answer
   x = 1,669.89