Finding the Fourth Proportional to 1,335.48, 1,843.78 and 863.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.48 : 1,843.78 = 863.52 : x
2. Step 2: Convert to fraction form
   1,335.48/1,843.78 = 863.52/x
3. Step 3: Cross multiply
   1,335.48x = 1,843.78 × 863.52
4. Step 4: Simplify right side
   1,335.48x = 1,592,140.91
5. Step 5: Solve for x
   x = 1,592,140.91/1,335.48
6. Step 6: Final answer
   x = 1,192.19