Finding the Fourth Proportional to 1,336.96, 1,843.30 and 864.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.96 : 1,843.30 = 864.06 : x
2. Step 2: Convert to fraction form
   1,336.96/1,843.30 = 864.06/x
3. Step 3: Cross multiply
   1,336.96x = 1,843.30 × 864.06
4. Step 4: Simplify right side
   1,336.96x = 1,592,721.80
5. Step 5: Solve for x
   x = 1,592,721.80/1,336.96
6. Step 6: Final answer
   x = 1,191.30