Finding the Fourth Proportional to 2,619.34, 3,930.32 and 976.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.34 : 3,930.32 = 976.25 : x
2. Step 2: Convert to fraction form
   2,619.34/3,930.32 = 976.25/x
3. Step 3: Cross multiply
   2,619.34x = 3,930.32 × 976.25
4. Step 4: Simplify right side
   2,619.34x = 3,836,987.17
5. Step 5: Solve for x
   x = 3,836,987.17/2,619.34
6. Step 6: Final answer
   x = 1,464.87