Finding the Fourth Proportional to 1,019.48, 1,536.02 and 922.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.48 : 1,536.02 = 922.09 : x
2. Step 2: Convert to fraction form
   1,019.48/1,536.02 = 922.09/x
3. Step 3: Cross multiply
   1,019.48x = 1,536.02 × 922.09
4. Step 4: Simplify right side
   1,019.48x = 1,416,346.38
5. Step 5: Solve for x
   x = 1,416,346.38/1,019.48
6. Step 6: Final answer
   x = 1,389.29