Finding the Fourth Proportional to 2,205.42, 3,299.88 and 2,180.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.42 : 3,299.88 = 2,180.82 : x
2. Step 2: Convert to fraction form
   2,205.42/3,299.88 = 2,180.82/x
3. Step 3: Cross multiply
   2,205.42x = 3,299.88 × 2,180.82
4. Step 4: Simplify right side
   2,205.42x = 7,196,444.30
5. Step 5: Solve for x
   x = 7,196,444.30/2,205.42
6. Step 6: Final answer
   x = 3,263.07