Finding the Fourth Proportional to 1,452.72, 2,005.02 and 863.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.72 : 2,005.02 = 863.58 : x
2. Step 2: Convert to fraction form
   1,452.72/2,005.02 = 863.58/x
3. Step 3: Cross multiply
   1,452.72x = 2,005.02 × 863.58
4. Step 4: Simplify right side
   1,452.72x = 1,731,495.17
5. Step 5: Solve for x
   x = 1,731,495.17/1,452.72
6. Step 6: Final answer
   x = 1,191.90