Finding the Fourth Proportional to 3,290.32, 4,936.38 and 1,211.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,290.32 : 4,936.38 = 1,211.56 : x
2. Step 2: Convert to fraction form
   3,290.32/4,936.38 = 1,211.56/x
3. Step 3: Cross multiply
   3,290.32x = 4,936.38 × 1,211.56
4. Step 4: Simplify right side
   3,290.32x = 5,980,720.55
5. Step 5: Solve for x
   x = 5,980,720.55/3,290.32
6. Step 6: Final answer
   x = 1,817.67