Finding the Fourth Proportional to 3,768.65, 5,200.45 and 2,089.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,768.65 : 5,200.45 = 2,089.89 : x
2. Step 2: Convert to fraction form
   3,768.65/5,200.45 = 2,089.89/x
3. Step 3: Cross multiply
   3,768.65x = 5,200.45 × 2,089.89
4. Step 4: Simplify right side
   3,768.65x = 10,868,363.23
5. Step 5: Solve for x
   x = 10,868,363.23/3,768.65
6. Step 6: Final answer
   x = 2,883.89