Finding the Fourth Proportional to 2,211.34, 3,297.50 and 2,191.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211.34 : 3,297.50 = 2,191.60 : x
2. Step 2: Convert to fraction form
   2,211.34/3,297.50 = 2,191.60/x
3. Step 3: Cross multiply
   2,211.34x = 3,297.50 × 2,191.60
4. Step 4: Simplify right side
   2,211.34x = 7,226,801
5. Step 5: Solve for x
   x = 7,226,801/2,211.34
6. Step 6: Final answer
   x = 3,268.06