Finding the Fourth Proportional to 1,047.39, 1,446.47 and 906.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.39 : 1,446.47 = 906.83 : x
2. Step 2: Convert to fraction form
   1,047.39/1,446.47 = 906.83/x
3. Step 3: Cross multiply
   1,047.39x = 1,446.47 × 906.83
4. Step 4: Simplify right side
   1,047.39x = 1,311,708.27
5. Step 5: Solve for x
   x = 1,311,708.27/1,047.39
6. Step 6: Final answer
   x = 1,252.36