Finding the Fourth Proportional to 1,369.43, 1,890.17 and 845.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.43 : 1,890.17 = 845.16 : x
2. Step 2: Convert to fraction form
   1,369.43/1,890.17 = 845.16/x
3. Step 3: Cross multiply
   1,369.43x = 1,890.17 × 845.16
4. Step 4: Simplify right side
   1,369.43x = 1,597,487.93
5. Step 5: Solve for x
   x = 1,597,487.93/1,369.43
6. Step 6: Final answer
   x = 1,166.54