Finding the Fourth Proportional to 2,618.28, 3,928.95 and 975.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.28 : 3,928.95 = 975.96 : x
2. Step 2: Convert to fraction form
   2,618.28/3,928.95 = 975.96/x
3. Step 3: Cross multiply
   2,618.28x = 3,928.95 × 975.96
4. Step 4: Simplify right side
   2,618.28x = 3,834,498.04
5. Step 5: Solve for x
   x = 3,834,498.04/2,618.28
6. Step 6: Final answer
   x = 1,464.51