Finding the Fourth Proportional to 3,898.57, 5,847.89 and 976.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,898.57 : 5,847.89 = 976.88 : x
2. Step 2: Convert to fraction form
   3,898.57/5,847.89 = 976.88/x
3. Step 3: Cross multiply
   3,898.57x = 5,847.89 × 976.88
4. Step 4: Simplify right side
   3,898.57x = 5,712,686.78
5. Step 5: Solve for x
   x = 5,712,686.78/3,898.57
6. Step 6: Final answer
   x = 1,465.33