Finding the Fourth Proportional to 925.82, 1,388.52 and 276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   925.82 : 1,388.52 = 276.50 : x
2. Step 2: Convert to fraction form
   925.82/1,388.52 = 276.50/x
3. Step 3: Cross multiply
   925.82x = 1,388.52 × 276.50
4. Step 4: Simplify right side
   925.82x = 383,925.78
5. Step 5: Solve for x
   x = 383,925.78/925.82
6. Step 6: Final answer
   x = 414.69