Finding the Fourth Proportional to 1,341.68, 1,851.71 and 810.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.68 : 1,851.71 = 810.59 : x
2. Step 2: Convert to fraction form
   1,341.68/1,851.71 = 810.59/x
3. Step 3: Cross multiply
   1,341.68x = 1,851.71 × 810.59
4. Step 4: Simplify right side
   1,341.68x = 1,500,971.24
5. Step 5: Solve for x
   x = 1,500,971.24/1,341.68
6. Step 6: Final answer
   x = 1,118.73