Finding the Fourth Proportional to 1,667.10, 2,499.12 and 1,016.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.10 : 2,499.12 = 1,016.40 : x
2. Step 2: Convert to fraction form
   1,667.10/2,499.12 = 1,016.40/x
3. Step 3: Cross multiply
   1,667.10x = 2,499.12 × 1,016.40
4. Step 4: Simplify right side
   1,667.10x = 2,540,105.57
5. Step 5: Solve for x
   x = 2,540,105.57/1,667.10
6. Step 6: Final answer
   x = 1,523.67