Finding the Fourth Proportional to 830.10, 1,144.86 and 804.72

Step by Step Solution

1. Step 1: Write the proportion equation
   830.10 : 1,144.86 = 804.72 : x
2. Step 2: Convert to fraction form
   830.10/1,144.86 = 804.72/x
3. Step 3: Cross multiply
   830.10x = 1,144.86 × 804.72
4. Step 4: Simplify right side
   830.10x = 921,291.74
5. Step 5: Solve for x
   x = 921,291.74/830.10
6. Step 6: Final answer
   x = 1,109.86