Finding the Fourth Proportional to 1,449.87, 2,000.82 and 786.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,449.87 : 2,000.82 = 786.72 : x
2. Step 2: Convert to fraction form
   1,449.87/2,000.82 = 786.72/x
3. Step 3: Cross multiply
   1,449.87x = 2,000.82 × 786.72
4. Step 4: Simplify right side
   1,449.87x = 1,574,085.11
5. Step 5: Solve for x
   x = 1,574,085.11/1,449.87
6. Step 6: Final answer
   x = 1,085.67