Finding the Fourth Proportional to 3,938.51, 5,907.83 and 976.97

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.51 : 5,907.83 = 976.97 : x
2. Step 2: Convert to fraction form
   3,938.51/5,907.83 = 976.97/x
3. Step 3: Cross multiply
   3,938.51x = 5,907.83 × 976.97
4. Step 4: Simplify right side
   3,938.51x = 5,771,789.89
5. Step 5: Solve for x
   x = 5,771,789.89/3,938.51
6. Step 6: Final answer
   x = 1,465.47