Finding the Fourth Proportional to 1,061.22, 1,591.77 and 631.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.22 : 1,591.77 = 631.11 : x
2. Step 2: Convert to fraction form
   1,061.22/1,591.77 = 631.11/x
3. Step 3: Cross multiply
   1,061.22x = 1,591.77 × 631.11
4. Step 4: Simplify right side
   1,061.22x = 1,004,581.96
5. Step 5: Solve for x
   x = 1,004,581.96/1,061.22
6. Step 6: Final answer
   x = 946.63