Finding the Fourth Proportional to 1,061.30, 1,591.58 and 367.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.30 : 1,591.58 = 367.86 : x
2. Step 2: Convert to fraction form
   1,061.30/1,591.58 = 367.86/x
3. Step 3: Cross multiply
   1,061.30x = 1,591.58 × 367.86
4. Step 4: Simplify right side
   1,061.30x = 585,478.62
5. Step 5: Solve for x
   x = 585,478.62/1,061.30
6. Step 6: Final answer
   x = 551.66