Finding the Fourth Proportional to 1,323.82, 1,830.12 and 1,311.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,323.82 : 1,830.12 = 1,311.36 : x
2. Step 2: Convert to fraction form
   1,323.82/1,830.12 = 1,311.36/x
3. Step 3: Cross multiply
   1,323.82x = 1,830.12 × 1,311.36
4. Step 4: Simplify right side
   1,323.82x = 2,399,946.16
5. Step 5: Solve for x
   x = 2,399,946.16/1,323.82
6. Step 6: Final answer
   x = 1,812.89