Finding the Fourth Proportional to 536.76, 740.72 and 300.72

Step by Step Solution

1. Step 1: Write the proportion equation
   536.76 : 740.72 = 300.72 : x
2. Step 2: Convert to fraction form
   536.76/740.72 = 300.72/x
3. Step 3: Cross multiply
   536.76x = 740.72 × 300.72
4. Step 4: Simplify right side
   536.76x = 222,749.32
5. Step 5: Solve for x
   x = 222,749.32/536.76
6. Step 6: Final answer
   x = 414.99