Finding the Fourth Proportional to 1,061.22, 1,591.82 and 628.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.22 : 1,591.82 = 628.14 : x
2. Step 2: Convert to fraction form
   1,061.22/1,591.82 = 628.14/x
3. Step 3: Cross multiply
   1,061.22x = 1,591.82 × 628.14
4. Step 4: Simplify right side
   1,061.22x = 999,885.81
5. Step 5: Solve for x
   x = 999,885.81/1,061.22
6. Step 6: Final answer
   x = 942.20