Finding the Fourth Proportional to 2,638.08, 3,640.32 and 1,458.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.08 : 3,640.32 = 1,458.96 : x
2. Step 2: Convert to fraction form
   2,638.08/3,640.32 = 1,458.96/x
3. Step 3: Cross multiply
   2,638.08x = 3,640.32 × 1,458.96
4. Step 4: Simplify right side
   2,638.08x = 5,311,081.27
5. Step 5: Solve for x
   x = 5,311,081.27/2,638.08
6. Step 6: Final answer
   x = 2,013.24