Finding the Fourth Proportional to 1,436.12, 2,154.50 and 786.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.12 : 2,154.50 = 786.52 : x
2. Step 2: Convert to fraction form
   1,436.12/2,154.50 = 786.52/x
3. Step 3: Cross multiply
   1,436.12x = 2,154.50 × 786.52
4. Step 4: Simplify right side
   1,436.12x = 1,694,557.34
5. Step 5: Solve for x
   x = 1,694,557.34/1,436.12
6. Step 6: Final answer
   x = 1,179.96