Finding the Fourth Proportional to 1,513.37, 2,269.78 and 417.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.37 : 2,269.78 = 417.50 : x
2. Step 2: Convert to fraction form
   1,513.37/2,269.78 = 417.50/x
3. Step 3: Cross multiply
   1,513.37x = 2,269.78 × 417.50
4. Step 4: Simplify right side
   1,513.37x = 947,633.15
5. Step 5: Solve for x
   x = 947,633.15/1,513.37
6. Step 6: Final answer
   x = 626.17