Finding the Fourth Proportional to 1,369.84, 1,889.58 and 845.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.84 : 1,889.58 = 845.50 : x
2. Step 2: Convert to fraction form
   1,369.84/1,889.58 = 845.50/x
3. Step 3: Cross multiply
   1,369.84x = 1,889.58 × 845.50
4. Step 4: Simplify right side
   1,369.84x = 1,597,639.89
5. Step 5: Solve for x
   x = 1,597,639.89/1,369.84
6. Step 6: Final answer
   x = 1,166.30