Finding the Fourth Proportional to 2,620.96, 3,930.72 and 1,450.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.96 : 3,930.72 = 1,450.56 : x
2. Step 2: Convert to fraction form
   2,620.96/3,930.72 = 1,450.56/x
3. Step 3: Cross multiply
   2,620.96x = 3,930.72 × 1,450.56
4. Step 4: Simplify right side
   2,620.96x = 5,701,745.20
5. Step 5: Solve for x
   x = 5,701,745.20/2,620.96
6. Step 6: Final answer
   x = 2,175.44