Finding the Fourth Proportional to 1,820.68, 2,729.59 and 846.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820.68 : 2,729.59 = 846.65 : x
2. Step 2: Convert to fraction form
   1,820.68/2,729.59 = 846.65/x
3. Step 3: Cross multiply
   1,820.68x = 2,729.59 × 846.65
4. Step 4: Simplify right side
   1,820.68x = 2,311,007.37
5. Step 5: Solve for x
   x = 2,311,007.37/1,820.68
6. Step 6: Final answer
   x = 1,269.31