Finding the Fourth Proportional to 1,339.55, 1,848.59 and 808.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.55 : 1,848.59 = 808.46 : x
2. Step 2: Convert to fraction form
   1,339.55/1,848.59 = 808.46/x
3. Step 3: Cross multiply
   1,339.55x = 1,848.59 × 808.46
4. Step 4: Simplify right side
   1,339.55x = 1,494,511.07
5. Step 5: Solve for x
   x = 1,494,511.07/1,339.55
6. Step 6: Final answer
   x = 1,115.68