Finding the Fourth Proportional to 3,976.96, 5,487.79 and 2,298.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.96 : 5,487.79 = 2,298.91 : x
2. Step 2: Convert to fraction form
   3,976.96/5,487.79 = 2,298.91/x
3. Step 3: Cross multiply
   3,976.96x = 5,487.79 × 2,298.91
4. Step 4: Simplify right side
   3,976.96x = 12,615,923.81
5. Step 5: Solve for x
   x = 12,615,923.81/3,976.96
6. Step 6: Final answer
   x = 3,172.25