Finding the Fourth Proportional to 1,019.79, 1,523.75 and 894.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.79 : 1,523.75 = 894.78 : x
2. Step 2: Convert to fraction form
   1,019.79/1,523.75 = 894.78/x
3. Step 3: Cross multiply
   1,019.79x = 1,523.75 × 894.78
4. Step 4: Simplify right side
   1,019.79x = 1,363,416.55
5. Step 5: Solve for x
   x = 1,363,416.55/1,019.79
6. Step 6: Final answer
   x = 1,336.96