Finding the Fourth Proportional to 1,436.40, 1,982.61 and 847.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.40 : 1,982.61 = 847.13 : x
2. Step 2: Convert to fraction form
   1,436.40/1,982.61 = 847.13/x
3. Step 3: Cross multiply
   1,436.40x = 1,982.61 × 847.13
4. Step 4: Simplify right side
   1,436.40x = 1,679,518.50
5. Step 5: Solve for x
   x = 1,679,518.50/1,436.40
6. Step 6: Final answer
   x = 1,169.26