Finding the Fourth Proportional to 1,218.69, 1,827.63 and 488.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218.69 : 1,827.63 = 488.07 : x
2. Step 2: Convert to fraction form
   1,218.69/1,827.63 = 488.07/x
3. Step 3: Cross multiply
   1,218.69x = 1,827.63 × 488.07
4. Step 4: Simplify right side
   1,218.69x = 892,011.37
5. Step 5: Solve for x
   x = 892,011.37/1,218.69
6. Step 6: Final answer
   x = 731.94