Finding the Fourth Proportional to 1,066.22, 1,470.99 and 646.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.22 : 1,470.99 = 646.27 : x
2. Step 2: Convert to fraction form
   1,066.22/1,470.99 = 646.27/x
3. Step 3: Cross multiply
   1,066.22x = 1,470.99 × 646.27
4. Step 4: Simplify right side
   1,066.22x = 950,656.71
5. Step 5: Solve for x
   x = 950,656.71/1,066.22
6. Step 6: Final answer
   x = 891.61