Finding the Fourth Proportional to 1,436.50, 1,979.94 and 1,187.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.50 : 1,979.94 = 1,187.02 : x
2. Step 2: Convert to fraction form
   1,436.50/1,979.94 = 1,187.02/x
3. Step 3: Cross multiply
   1,436.50x = 1,979.94 × 1,187.02
4. Step 4: Simplify right side
   1,436.50x = 2,350,228.38
5. Step 5: Solve for x
   x = 2,350,228.38/1,436.50
6. Step 6: Final answer
   x = 1,636.08