Finding the Fourth Proportional to 1,360.20, 1,877.37 and 863.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.20 : 1,877.37 = 863.52 : x
2. Step 2: Convert to fraction form
   1,360.20/1,877.37 = 863.52/x
3. Step 3: Cross multiply
   1,360.20x = 1,877.37 × 863.52
4. Step 4: Simplify right side
   1,360.20x = 1,621,146.54
5. Step 5: Solve for x
   x = 1,621,146.54/1,360.20
6. Step 6: Final answer
   x = 1,191.84