Finding the Fourth Proportional to 3,778.89, 5,214.24 and 2,100.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,778.89 : 5,214.24 = 2,100.25 : x
2. Step 2: Convert to fraction form
   3,778.89/5,214.24 = 2,100.25/x
3. Step 3: Cross multiply
   3,778.89x = 5,214.24 × 2,100.25
4. Step 4: Simplify right side
   3,778.89x = 10,951,214.08
5. Step 5: Solve for x
   x = 10,951,214.08/3,778.89
6. Step 6: Final answer
   x = 2,898.00