Finding the Fourth Proportional to 2,635.29, 3,636.59 and 1,587.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.29 : 3,636.59 = 1,587.15 : x
2. Step 2: Convert to fraction form
   2,635.29/3,636.59 = 1,587.15/x
3. Step 3: Cross multiply
   2,635.29x = 3,636.59 × 1,587.15
4. Step 4: Simplify right side
   2,635.29x = 5,771,805.88
5. Step 5: Solve for x
   x = 5,771,805.88/2,635.29
6. Step 6: Final answer
   x = 2,190.20