Finding the Fourth Proportional to 2,667.94, 4,000.66 and 912.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.94 : 4,000.66 = 912.47 : x
2. Step 2: Convert to fraction form
   2,667.94/4,000.66 = 912.47/x
3. Step 3: Cross multiply
   2,667.94x = 4,000.66 × 912.47
4. Step 4: Simplify right side
   2,667.94x = 3,650,482.23
5. Step 5: Solve for x
   x = 3,650,482.23/2,667.94
6. Step 6: Final answer
   x = 1,368.28