Finding the Fourth Proportional to 300.76, 451.58 and 185.69

Step by Step Solution

1. Step 1: Write the proportion equation
   300.76 : 451.58 = 185.69 : x
2. Step 2: Convert to fraction form
   300.76/451.58 = 185.69/x
3. Step 3: Cross multiply
   300.76x = 451.58 × 185.69
4. Step 4: Simplify right side
   300.76x = 83,853.89
5. Step 5: Solve for x
   x = 83,853.89/300.76
6. Step 6: Final answer
   x = 278.81