Finding the Fourth Proportional to 2,150.96, 3,228.26 and 1,604.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.96 : 3,228.26 = 1,604.21 : x
2. Step 2: Convert to fraction form
   2,150.96/3,228.26 = 1,604.21/x
3. Step 3: Cross multiply
   2,150.96x = 3,228.26 × 1,604.21
4. Step 4: Simplify right side
   2,150.96x = 5,178,782.81
5. Step 5: Solve for x
   x = 5,178,782.81/2,150.96
6. Step 6: Final answer
   x = 2,407.67