Finding the Fourth Proportional to 1,436.90, 1,982.86 and 847.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.90 : 1,982.86 = 847.47 : x
2. Step 2: Convert to fraction form
   1,436.90/1,982.86 = 847.47/x
3. Step 3: Cross multiply
   1,436.90x = 1,982.86 × 847.47
4. Step 4: Simplify right side
   1,436.90x = 1,680,414.36
5. Step 5: Solve for x
   x = 1,680,414.36/1,436.90
6. Step 6: Final answer
   x = 1,169.47