Finding the Fourth Proportional to 2,180.22, 3,008.55 and 1,236.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.22 : 3,008.55 = 1,236.18 : x
2. Step 2: Convert to fraction form
   2,180.22/3,008.55 = 1,236.18/x
3. Step 3: Cross multiply
   2,180.22x = 3,008.55 × 1,236.18
4. Step 4: Simplify right side
   2,180.22x = 3,719,109.34
5. Step 5: Solve for x
   x = 3,719,109.34/2,180.22
6. Step 6: Final answer
   x = 1,705.84