Finding the Fourth Proportional to 738.82, 1,018.72 and 551.71

Step by Step Solution

1. Step 1: Write the proportion equation
   738.82 : 1,018.72 = 551.71 : x
2. Step 2: Convert to fraction form
   738.82/1,018.72 = 551.71/x
3. Step 3: Cross multiply
   738.82x = 1,018.72 × 551.71
4. Step 4: Simplify right side
   738.82x = 562,038.01
5. Step 5: Solve for x
   x = 562,038.01/738.82
6. Step 6: Final answer
   x = 760.72