Finding the Fourth Proportional to 1,436.36, 1,981.78 and 847.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.36 : 1,981.78 = 847.08 : x
2. Step 2: Convert to fraction form
   1,436.36/1,981.78 = 847.08/x
3. Step 3: Cross multiply
   1,436.36x = 1,981.78 × 847.08
4. Step 4: Simplify right side
   1,436.36x = 1,678,726.20
5. Step 5: Solve for x
   x = 1,678,726.20/1,436.36
6. Step 6: Final answer
   x = 1,168.74