Finding the Fourth Proportional to 1,047.23, 1,571.12 and 585.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.23 : 1,571.12 = 585.33 : x
2. Step 2: Convert to fraction form
   1,047.23/1,571.12 = 585.33/x
3. Step 3: Cross multiply
   1,047.23x = 1,571.12 × 585.33
4. Step 4: Simplify right side
   1,047.23x = 919,618.69
5. Step 5: Solve for x
   x = 919,618.69/1,047.23
6. Step 6: Final answer
   x = 878.15