Finding the Fourth Proportional to 1,224.96, 1,836.72 and 444.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224.96 : 1,836.72 = 444.72 : x
2. Step 2: Convert to fraction form
   1,224.96/1,836.72 = 444.72/x
3. Step 3: Cross multiply
   1,224.96x = 1,836.72 × 444.72
4. Step 4: Simplify right side
   1,224.96x = 816,826.12
5. Step 5: Solve for x
   x = 816,826.12/1,224.96
6. Step 6: Final answer
   x = 666.82