Finding the Fourth Proportional to 1,392.52, 1,922.22 and 803.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.52 : 1,922.22 = 803.56 : x
2. Step 2: Convert to fraction form
   1,392.52/1,922.22 = 803.56/x
3. Step 3: Cross multiply
   1,392.52x = 1,922.22 × 803.56
4. Step 4: Simplify right side
   1,392.52x = 1,544,619.10
5. Step 5: Solve for x
   x = 1,544,619.10/1,392.52
6. Step 6: Final answer
   x = 1,109.23