Finding the Fourth Proportional to 1,412.94, 2,119.62 and 488.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.94 : 2,119.62 = 488.72 : x
2. Step 2: Convert to fraction form
   1,412.94/2,119.62 = 488.72/x
3. Step 3: Cross multiply
   1,412.94x = 2,119.62 × 488.72
4. Step 4: Simplify right side
   1,412.94x = 1,035,900.69
5. Step 5: Solve for x
   x = 1,035,900.69/1,412.94
6. Step 6: Final answer
   x = 733.15