Finding the Fourth Proportional to 3,921.96, 5,410.42 and 2,265

Step by Step Solution

1. Step 1: Write the proportion equation
   3,921.96 : 5,410.42 = 2,265 : x
2. Step 2: Convert to fraction form
   3,921.96/5,410.42 = 2,265/x
3. Step 3: Cross multiply
   3,921.96x = 5,410.42 × 2,265
4. Step 4: Simplify right side
   3,921.96x = 12,254,601.30
5. Step 5: Solve for x
   x = 12,254,601.30/3,921.96
6. Step 6: Final answer
   x = 3,124.61