Finding the Fourth Proportional to 1,328.70, 1,833.58 and 804.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,328.70 : 1,833.58 = 804.72 : x
2. Step 2: Convert to fraction form
   1,328.70/1,833.58 = 804.72/x
3. Step 3: Cross multiply
   1,328.70x = 1,833.58 × 804.72
4. Step 4: Simplify right side
   1,328.70x = 1,475,518.50
5. Step 5: Solve for x
   x = 1,475,518.50/1,328.70
6. Step 6: Final answer
   x = 1,110.50