Finding the Fourth Proportional to 2,025.21, 2,794.72 and 1,228.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,025.21 : 2,794.72 = 1,228.63 : x
2. Step 2: Convert to fraction form
   2,025.21/2,794.72 = 1,228.63/x
3. Step 3: Cross multiply
   2,025.21x = 2,794.72 × 1,228.63
4. Step 4: Simplify right side
   2,025.21x = 3,433,656.72
5. Step 5: Solve for x
   x = 3,433,656.72/2,025.21
6. Step 6: Final answer
   x = 1,695.46