Finding the Fourth Proportional to 1,513.22, 2,269.89 and 417.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.22 : 2,269.89 = 417.67 : x
2. Step 2: Convert to fraction form
   1,513.22/2,269.89 = 417.67/x
3. Step 3: Cross multiply
   1,513.22x = 2,269.89 × 417.67
4. Step 4: Simplify right side
   1,513.22x = 948,064.96
5. Step 5: Solve for x
   x = 948,064.96/1,513.22
6. Step 6: Final answer
   x = 626.52