Finding the Fourth Proportional to 1,341.76, 1,851.42 and 817.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.76 : 1,851.42 = 817.96 : x
2. Step 2: Convert to fraction form
   1,341.76/1,851.42 = 817.96/x
3. Step 3: Cross multiply
   1,341.76x = 1,851.42 × 817.96
4. Step 4: Simplify right side
   1,341.76x = 1,514,387.50
5. Step 5: Solve for x
   x = 1,514,387.50/1,341.76
6. Step 6: Final answer
   x = 1,128.66