Finding the Fourth Proportional to 1,111.80, 1,668.73 and 564.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.80 : 1,668.73 = 564.37 : x
2. Step 2: Convert to fraction form
   1,111.80/1,668.73 = 564.37/x
3. Step 3: Cross multiply
   1,111.80x = 1,668.73 × 564.37
4. Step 4: Simplify right side
   1,111.80x = 941,781.15
5. Step 5: Solve for x
   x = 941,781.15/1,111.80
6. Step 6: Final answer
   x = 847.08