Finding the Fourth Proportional to 1,061.29, 1,591.57 and 367.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.29 : 1,591.57 = 367.77 : x
2. Step 2: Convert to fraction form
   1,061.29/1,591.57 = 367.77/x
3. Step 3: Cross multiply
   1,061.29x = 1,591.57 × 367.77
4. Step 4: Simplify right side
   1,061.29x = 585,331.70
5. Step 5: Solve for x
   x = 585,331.70/1,061.29
6. Step 6: Final answer
   x = 551.53