Finding the Fourth Proportional to 1,369.68, 1,890.06 and 845.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.68 : 1,890.06 = 845.72 : x
2. Step 2: Convert to fraction form
   1,369.68/1,890.06 = 845.72/x
3. Step 3: Cross multiply
   1,369.68x = 1,890.06 × 845.72
4. Step 4: Simplify right side
   1,369.68x = 1,598,461.54
5. Step 5: Solve for x
   x = 1,598,461.54/1,369.68
6. Step 6: Final answer
   x = 1,167.03