Finding the Fourth Proportional to 1,393.76, 1,923.48 and 804.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.76 : 1,923.48 = 804.32 : x
2. Step 2: Convert to fraction form
   1,393.76/1,923.48 = 804.32/x
3. Step 3: Cross multiply
   1,393.76x = 1,923.48 × 804.32
4. Step 4: Simplify right side
   1,393.76x = 1,547,093.43
5. Step 5: Solve for x
   x = 1,547,093.43/1,393.76
6. Step 6: Final answer
   x = 1,110.01