Finding the Fourth Proportional to 2,621, 3,930.72 and 1,233.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621 : 3,930.72 = 1,233.56 : x
2. Step 2: Convert to fraction form
   2,621/3,930.72 = 1,233.56/x
3. Step 3: Cross multiply
   2,621x = 3,930.72 × 1,233.56
4. Step 4: Simplify right side
   2,621x = 4,848,778.96
5. Step 5: Solve for x
   x = 4,848,778.96/2,621
6. Step 6: Final answer
   x = 1,849.97