Finding the Fourth Proportional to 2,769.50, 4,152.89 and 919.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,769.50 : 4,152.89 = 919.97 : x
2. Step 2: Convert to fraction form
   2,769.50/4,152.89 = 919.97/x
3. Step 3: Cross multiply
   2,769.50x = 4,152.89 × 919.97
4. Step 4: Simplify right side
   2,769.50x = 3,820,546.90
5. Step 5: Solve for x
   x = 3,820,546.90/2,769.50
6. Step 6: Final answer
   x = 1,379.51