Finding the Fourth Proportional to 2,758.69, 3,806.89 and 1,578.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,758.69 : 3,806.89 = 1,578.93 : x
2. Step 2: Convert to fraction form
   2,758.69/3,806.89 = 1,578.93/x
3. Step 3: Cross multiply
   2,758.69x = 3,806.89 × 1,578.93
4. Step 4: Simplify right side
   2,758.69x = 6,010,812.83
5. Step 5: Solve for x
   x = 6,010,812.83/2,758.69
6. Step 6: Final answer
   x = 2,178.86