Finding the Fourth Proportional to 1,339.74, 1,849.10 and 808.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.74 : 1,849.10 = 808.71 : x
2. Step 2: Convert to fraction form
   1,339.74/1,849.10 = 808.71/x
3. Step 3: Cross multiply
   1,339.74x = 1,849.10 × 808.71
4. Step 4: Simplify right side
   1,339.74x = 1,495,385.66
5. Step 5: Solve for x
   x = 1,495,385.66/1,339.74
6. Step 6: Final answer
   x = 1,116.18