Finding the Fourth Proportional to 1,341.33, 1,851.49 and 810.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.33 : 1,851.49 = 810.51 : x
2. Step 2: Convert to fraction form
   1,341.33/1,851.49 = 810.51/x
3. Step 3: Cross multiply
   1,341.33x = 1,851.49 × 810.51
4. Step 4: Simplify right side
   1,341.33x = 1,500,651.16
5. Step 5: Solve for x
   x = 1,500,651.16/1,341.33
6. Step 6: Final answer
   x = 1,118.78