Finding the Fourth Proportional to 1,423.03, 1,964.16 and 863.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.03 : 1,964.16 = 863.52 : x
2. Step 2: Convert to fraction form
   1,423.03/1,964.16 = 863.52/x
3. Step 3: Cross multiply
   1,423.03x = 1,964.16 × 863.52
4. Step 4: Simplify right side
   1,423.03x = 1,696,091.44
5. Step 5: Solve for x
   x = 1,696,091.44/1,423.03
6. Step 6: Final answer
   x = 1,191.89