Finding the Fourth Proportional to 2,636.82, 3,949.47 and 1,864.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.82 : 3,949.47 = 1,864.98 : x
2. Step 2: Convert to fraction form
   2,636.82/3,949.47 = 1,864.98/x
3. Step 3: Cross multiply
   2,636.82x = 3,949.47 × 1,864.98
4. Step 4: Simplify right side
   2,636.82x = 7,365,682.56
5. Step 5: Solve for x
   x = 7,365,682.56/2,636.82
6. Step 6: Final answer
   x = 2,793.40