Finding the Fourth Proportional to 1,341.86, 1,851.93 and 817.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.86 : 1,851.93 = 817.58 : x
2. Step 2: Convert to fraction form
   1,341.86/1,851.93 = 817.58/x
3. Step 3: Cross multiply
   1,341.86x = 1,851.93 × 817.58
4. Step 4: Simplify right side
   1,341.86x = 1,514,105.56
5. Step 5: Solve for x
   x = 1,514,105.56/1,341.86
6. Step 6: Final answer
   x = 1,128.37