Finding the Fourth Proportional to 2,638.17, 3,640.68 and 1,459.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.17 : 3,640.68 = 1,459.28 : x
2. Step 2: Convert to fraction form
   2,638.17/3,640.68 = 1,459.28/x
3. Step 3: Cross multiply
   2,638.17x = 3,640.68 × 1,459.28
4. Step 4: Simplify right side
   2,638.17x = 5,312,780.61
5. Step 5: Solve for x
   x = 5,312,780.61/2,638.17
6. Step 6: Final answer
   x = 2,013.81