Finding the Fourth Proportional to 1,339.70, 1,849.52 and 808.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.70 : 1,849.52 = 808.68 : x
2. Step 2: Convert to fraction form
   1,339.70/1,849.52 = 808.68/x
3. Step 3: Cross multiply
   1,339.70x = 1,849.52 × 808.68
4. Step 4: Simplify right side
   1,339.70x = 1,495,669.83
5. Step 5: Solve for x
   x = 1,495,669.83/1,339.70
6. Step 6: Final answer
   x = 1,116.42