Finding the Fourth Proportional to 3,112.32, 4,667.54 and 920.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,112.32 : 4,667.54 = 920.52 : x
2. Step 2: Convert to fraction form
   3,112.32/4,667.54 = 920.52/x
3. Step 3: Cross multiply
   3,112.32x = 4,667.54 × 920.52
4. Step 4: Simplify right side
   3,112.32x = 4,296,563.92
5. Step 5: Solve for x
   x = 4,296,563.92/3,112.32
6. Step 6: Final answer
   x = 1,380.50