Finding the Fourth Proportional to 1,341.38, 1,851.24 and 817.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.38 : 1,851.24 = 817.72 : x
2. Step 2: Convert to fraction form
   1,341.38/1,851.24 = 817.72/x
3. Step 3: Cross multiply
   1,341.38x = 1,851.24 × 817.72
4. Step 4: Simplify right side
   1,341.38x = 1,513,795.97
5. Step 5: Solve for x
   x = 1,513,795.97/1,341.38
6. Step 6: Final answer
   x = 1,128.54