Finding the Fourth Proportional to 1,124.89, 1,689.23 and 847.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.89 : 1,689.23 = 847.27 : x
2. Step 2: Convert to fraction form
   1,124.89/1,689.23 = 847.27/x
3. Step 3: Cross multiply
   1,124.89x = 1,689.23 × 847.27
4. Step 4: Simplify right side
   1,124.89x = 1,431,233.90
5. Step 5: Solve for x
   x = 1,431,233.90/1,124.89
6. Step 6: Final answer
   x = 1,272.33