Finding the Fourth Proportional to 1,061.60, 1,591.68 and 367.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.60 : 1,591.68 = 367.94 : x
2. Step 2: Convert to fraction form
   1,061.60/1,591.68 = 367.94/x
3. Step 3: Cross multiply
   1,061.60x = 1,591.68 × 367.94
4. Step 4: Simplify right side
   1,061.60x = 585,642.74
5. Step 5: Solve for x
   x = 585,642.74/1,061.60
6. Step 6: Final answer
   x = 551.66