Finding the Fourth Proportional to 3,918.69, 5,879.96 and 1,838.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,918.69 : 5,879.96 = 1,838.87 : x
2. Step 2: Convert to fraction form
   3,918.69/5,879.96 = 1,838.87/x
3. Step 3: Cross multiply
   3,918.69x = 5,879.96 × 1,838.87
4. Step 4: Simplify right side
   3,918.69x = 10,812,475.89
5. Step 5: Solve for x
   x = 10,812,475.89/3,918.69
6. Step 6: Final answer
   x = 2,759.20