Finding the Fourth Proportional to 1,436.77, 1,983.15 and 847.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.77 : 1,983.15 = 847.50 : x
2. Step 2: Convert to fraction form
   1,436.77/1,983.15 = 847.50/x
3. Step 3: Cross multiply
   1,436.77x = 1,983.15 × 847.50
4. Step 4: Simplify right side
   1,436.77x = 1,680,712.19
5. Step 5: Solve for x
   x = 1,680,712.19/1,436.77
6. Step 6: Final answer
   x = 1,169.78