Finding the Fourth Proportional to 2,620.45, 3,927.10 and 1,448.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.45 : 3,927.10 = 1,448.72 : x
2. Step 2: Convert to fraction form
   2,620.45/3,927.10 = 1,448.72/x
3. Step 3: Cross multiply
   2,620.45x = 3,927.10 × 1,448.72
4. Step 4: Simplify right side
   2,620.45x = 5,689,268.31
5. Step 5: Solve for x
   x = 5,689,268.31/2,620.45
6. Step 6: Final answer
   x = 2,171.10