Finding the Fourth Proportional to 3,112.14, 4,667.94 and 920.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,112.14 : 4,667.94 = 920.76 : x
2. Step 2: Convert to fraction form
   3,112.14/4,667.94 = 920.76/x
3. Step 3: Cross multiply
   3,112.14x = 4,667.94 × 920.76
4. Step 4: Simplify right side
   3,112.14x = 4,298,052.43
5. Step 5: Solve for x
   x = 4,298,052.43/3,112.14
6. Step 6: Final answer
   x = 1,381.06