Finding the Fourth Proportional to 3,649.47, 5,036.76 and 2,158.26

Step by Step Solution

1. Step 1: Write the proportion equation
   3,649.47 : 5,036.76 = 2,158.26 : x
2. Step 2: Convert to fraction form
   3,649.47/5,036.76 = 2,158.26/x
3. Step 3: Cross multiply
   3,649.47x = 5,036.76 × 2,158.26
4. Step 4: Simplify right side
   3,649.47x = 10,870,637.64
5. Step 5: Solve for x
   x = 10,870,637.64/3,649.47
6. Step 6: Final answer
   x = 2,978.69