Finding the Fourth Proportional to 1,340.18, 1,848.65 and 808.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.18 : 1,848.65 = 808.68 : x
2. Step 2: Convert to fraction form
   1,340.18/1,848.65 = 808.68/x
3. Step 3: Cross multiply
   1,340.18x = 1,848.65 × 808.68
4. Step 4: Simplify right side
   1,340.18x = 1,494,962.24
5. Step 5: Solve for x
   x = 1,494,962.24/1,340.18
6. Step 6: Final answer
   x = 1,115.50