Finding the Fourth Proportional to 1,061.06, 1,591.78 and 367.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.06 : 1,591.78 = 367.70 : x
2. Step 2: Convert to fraction form
   1,061.06/1,591.78 = 367.70/x
3. Step 3: Cross multiply
   1,061.06x = 1,591.78 × 367.70
4. Step 4: Simplify right side
   1,061.06x = 585,297.51
5. Step 5: Solve for x
   x = 585,297.51/1,061.06
6. Step 6: Final answer
   x = 551.62