Finding the Fourth Proportional to 1,111.38, 1,663.83 and 892.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.38 : 1,663.83 = 892.68 : x
2. Step 2: Convert to fraction form
   1,111.38/1,663.83 = 892.68/x
3. Step 3: Cross multiply
   1,111.38x = 1,663.83 × 892.68
4. Step 4: Simplify right side
   1,111.38x = 1,485,267.76
5. Step 5: Solve for x
   x = 1,485,267.76/1,111.38
6. Step 6: Final answer
   x = 1,336.42