Finding the Fourth Proportional to 2,638.50, 3,638.15 and 1,799.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.50 : 3,638.15 = 1,799.69 : x
2. Step 2: Convert to fraction form
   2,638.50/3,638.15 = 1,799.69/x
3. Step 3: Cross multiply
   2,638.50x = 3,638.15 × 1,799.69
4. Step 4: Simplify right side
   2,638.50x = 6,547,514.98
5. Step 5: Solve for x
   x = 6,547,514.98/2,638.50
6. Step 6: Final answer
   x = 2,481.53