Finding the Fourth Proportional to 1,667.46, 2,501.12 and 418.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.46 : 2,501.12 = 418.05 : x
2. Step 2: Convert to fraction form
   1,667.46/2,501.12 = 418.05/x
3. Step 3: Cross multiply
   1,667.46x = 2,501.12 × 418.05
4. Step 4: Simplify right side
   1,667.46x = 1,045,593.22
5. Step 5: Solve for x
   x = 1,045,593.22/1,667.46
6. Step 6: Final answer
   x = 627.06