Finding the Fourth Proportional to 1,341.45, 1,851.47 and 810.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.45 : 1,851.47 = 810.63 : x
2. Step 2: Convert to fraction form
   1,341.45/1,851.47 = 810.63/x
3. Step 3: Cross multiply
   1,341.45x = 1,851.47 × 810.63
4. Step 4: Simplify right side
   1,341.45x = 1,500,853.07
5. Step 5: Solve for x
   x = 1,500,853.07/1,341.45
6. Step 6: Final answer
   x = 1,118.83