Finding the Fourth Proportional to 2,638.69, 3,658.05 and 2,498.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.69 : 3,658.05 = 2,498.25 : x
2. Step 2: Convert to fraction form
   2,638.69/3,658.05 = 2,498.25/x
3. Step 3: Cross multiply
   2,638.69x = 3,658.05 × 2,498.25
4. Step 4: Simplify right side
   2,638.69x = 9,138,692.63
5. Step 5: Solve for x
   x = 9,138,692.63/2,638.69
6. Step 6: Final answer
   x = 3,463.34