Finding the Fourth Proportional to 1,393.59, 1,923.56 and 804.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.59 : 1,923.56 = 804.52 : x
2. Step 2: Convert to fraction form
   1,393.59/1,923.56 = 804.52/x
3. Step 3: Cross multiply
   1,393.59x = 1,923.56 × 804.52
4. Step 4: Simplify right side
   1,393.59x = 1,547,534.88
5. Step 5: Solve for x
   x = 1,547,534.88/1,393.59
6. Step 6: Final answer
   x = 1,110.47