Finding the Fourth Proportional to 2,638.35, 3,647.88 and 2,310.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.35 : 3,647.88 = 2,310.30 : x
2. Step 2: Convert to fraction form
   2,638.35/3,647.88 = 2,310.30/x
3. Step 3: Cross multiply
   2,638.35x = 3,647.88 × 2,310.30
4. Step 4: Simplify right side
   2,638.35x = 8,427,697.16
5. Step 5: Solve for x
   x = 8,427,697.16/2,638.35
6. Step 6: Final answer
   x = 3,194.31