Finding the Fourth Proportional to 2,236.24, 3,086.40 and 1,304.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.24 : 3,086.40 = 1,304.72 : x
2. Step 2: Convert to fraction form
   2,236.24/3,086.40 = 1,304.72/x
3. Step 3: Cross multiply
   2,236.24x = 3,086.40 × 1,304.72
4. Step 4: Simplify right side
   2,236.24x = 4,026,887.81
5. Step 5: Solve for x
   x = 4,026,887.81/2,236.24
6. Step 6: Final answer
   x = 1,800.74