Finding the Fourth Proportional to 1,808.37, 2,714.72 and 1,078.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,808.37 : 2,714.72 = 1,078.29 : x
2. Step 2: Convert to fraction form
   1,808.37/2,714.72 = 1,078.29/x
3. Step 3: Cross multiply
   1,808.37x = 2,714.72 × 1,078.29
4. Step 4: Simplify right side
   1,808.37x = 2,927,250.04
5. Step 5: Solve for x
   x = 2,927,250.04/1,808.37
6. Step 6: Final answer
   x = 1,618.72