Finding the Fourth Proportional to 2,200.57, 3,293.56 and 1,211.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.57 : 3,293.56 = 1,211.86 : x
2. Step 2: Convert to fraction form
   2,200.57/3,293.56 = 1,211.86/x
3. Step 3: Cross multiply
   2,200.57x = 3,293.56 × 1,211.86
4. Step 4: Simplify right side
   2,200.57x = 3,991,339.25
5. Step 5: Solve for x
   x = 3,991,339.25/2,200.57
6. Step 6: Final answer
   x = 1,813.78