Finding the Fourth Proportional to 2,209.59, 3,311.34 and 1,114.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.59 : 3,311.34 = 1,114.68 : x
2. Step 2: Convert to fraction form
   2,209.59/3,311.34 = 1,114.68/x
3. Step 3: Cross multiply
   2,209.59x = 3,311.34 × 1,114.68
4. Step 4: Simplify right side
   2,209.59x = 3,691,084.47
5. Step 5: Solve for x
   x = 3,691,084.47/2,209.59
6. Step 6: Final answer
   x = 1,670.48