Finding the Fourth Proportional to 1,066.43, 1,471.37 and 618.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.43 : 1,471.37 = 618.26 : x
2. Step 2: Convert to fraction form
   1,066.43/1,471.37 = 618.26/x
3. Step 3: Cross multiply
   1,066.43x = 1,471.37 × 618.26
4. Step 4: Simplify right side
   1,066.43x = 909,689.22
5. Step 5: Solve for x
   x = 909,689.22/1,066.43
6. Step 6: Final answer
   x = 853.02