Finding the Fourth Proportional to 1,339.24, 1,848.54 and 816.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.24 : 1,848.54 = 816.22 : x
2. Step 2: Convert to fraction form
   1,339.24/1,848.54 = 816.22/x
3. Step 3: Cross multiply
   1,339.24x = 1,848.54 × 816.22
4. Step 4: Simplify right side
   1,339.24x = 1,508,815.32
5. Step 5: Solve for x
   x = 1,508,815.32/1,339.24
6. Step 6: Final answer
   x = 1,126.62