Finding the Fourth Proportional to 2,505.85, 3,450.15 and 2,206.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.85 : 3,450.15 = 2,206.89 : x
2. Step 2: Convert to fraction form
   2,505.85/3,450.15 = 2,206.89/x
3. Step 3: Cross multiply
   2,505.85x = 3,450.15 × 2,206.89
4. Step 4: Simplify right side
   2,505.85x = 7,614,098.43
5. Step 5: Solve for x
   x = 7,614,098.43/2,505.85
6. Step 6: Final answer
   x = 3,038.53