Finding the Fourth Proportional to 1,146.89, 1,720.34 and 488.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.89 : 1,720.34 = 488.67 : x
2. Step 2: Convert to fraction form
   1,146.89/1,720.34 = 488.67/x
3. Step 3: Cross multiply
   1,146.89x = 1,720.34 × 488.67
4. Step 4: Simplify right side
   1,146.89x = 840,678.55
5. Step 5: Solve for x
   x = 840,678.55/1,146.89
6. Step 6: Final answer
   x = 733.01