Finding the Fourth Proportional to 3,867.35, 5,792.78 and 1,889.93

Step by Step Solution

1. Step 1: Write the proportion equation
   3,867.35 : 5,792.78 = 1,889.93 : x
2. Step 2: Convert to fraction form
   3,867.35/5,792.78 = 1,889.93/x
3. Step 3: Cross multiply
   3,867.35x = 5,792.78 × 1,889.93
4. Step 4: Simplify right side
   3,867.35x = 10,947,948.71
5. Step 5: Solve for x
   x = 10,947,948.71/3,867.35
6. Step 6: Final answer
   x = 2,830.87