Finding the Fourth Proportional to 1,155.76, 1,734.32 and 636.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.76 : 1,734.32 = 636.04 : x
2. Step 2: Convert to fraction form
   1,155.76/1,734.32 = 636.04/x
3. Step 3: Cross multiply
   1,155.76x = 1,734.32 × 636.04
4. Step 4: Simplify right side
   1,155.76x = 1,103,096.89
5. Step 5: Solve for x
   x = 1,103,096.89/1,155.76
6. Step 6: Final answer
   x = 954.43