Finding the Fourth Proportional to 3,778.93, 5,214.69 and 2,100.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,778.93 : 5,214.69 = 2,100.28 : x
2. Step 2: Convert to fraction form
   3,778.93/5,214.69 = 2,100.28/x
3. Step 3: Cross multiply
   3,778.93x = 5,214.69 × 2,100.28
4. Step 4: Simplify right side
   3,778.93x = 10,952,308.81
5. Step 5: Solve for x
   x = 10,952,308.81/3,778.93
6. Step 6: Final answer
   x = 2,898.26