Finding the Fourth Proportional to 1,412.76, 1,949.55 and 823.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.76 : 1,949.55 = 823.18 : x
2. Step 2: Convert to fraction form
   1,412.76/1,949.55 = 823.18/x
3. Step 3: Cross multiply
   1,412.76x = 1,949.55 × 823.18
4. Step 4: Simplify right side
   1,412.76x = 1,604,830.89
5. Step 5: Solve for x
   x = 1,604,830.89/1,412.76
6. Step 6: Final answer
   x = 1,135.96