Finding the Fourth Proportional to 3,384.52, 5,076.42 and 919.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,384.52 : 5,076.42 = 919.57 : x
2. Step 2: Convert to fraction form
   3,384.52/5,076.42 = 919.57/x
3. Step 3: Cross multiply
   3,384.52x = 5,076.42 × 919.57
4. Step 4: Simplify right side
   3,384.52x = 4,668,123.54
5. Step 5: Solve for x
   x = 4,668,123.54/3,384.52
6. Step 6: Final answer
   x = 1,379.26