Finding the Fourth Proportional to 2,667.10, 3,999.15 and 1,023.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.10 : 3,999.15 = 1,023.70 : x
2. Step 2: Convert to fraction form
   2,667.10/3,999.15 = 1,023.70/x
3. Step 3: Cross multiply
   2,667.10x = 3,999.15 × 1,023.70
4. Step 4: Simplify right side
   2,667.10x = 4,093,929.86
5. Step 5: Solve for x
   x = 4,093,929.86/2,667.10
6. Step 6: Final answer
   x = 1,534.97