Finding the Fourth Proportional to 2,438.10, 3,658.17 and 976.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,438.10 : 3,658.17 = 976.89 : x
2. Step 2: Convert to fraction form
   2,438.10/3,658.17 = 976.89/x
3. Step 3: Cross multiply
   2,438.10x = 3,658.17 × 976.89
4. Step 4: Simplify right side
   2,438.10x = 3,573,629.69
5. Step 5: Solve for x
   x = 3,573,629.69/2,438.10
6. Step 6: Final answer
   x = 1,465.74