Finding the Fourth Proportional to 2,928.25, 4,389.73 and 1,078.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,928.25 : 4,389.73 = 1,078.93 : x
2. Step 2: Convert to fraction form
   2,928.25/4,389.73 = 1,078.93/x
3. Step 3: Cross multiply
   2,928.25x = 4,389.73 × 1,078.93
4. Step 4: Simplify right side
   2,928.25x = 4,736,211.39
5. Step 5: Solve for x
   x = 4,736,211.39/2,928.25
6. Step 6: Final answer
   x = 1,617.42