Finding the Fourth Proportional to 1,334.56, 1,841.18 and 810.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,334.56 : 1,841.18 = 810.40 : x
2. Step 2: Convert to fraction form
   1,334.56/1,841.18 = 810.40/x
3. Step 3: Cross multiply
   1,334.56x = 1,841.18 × 810.40
4. Step 4: Simplify right side
   1,334.56x = 1,492,092.27
5. Step 5: Solve for x
   x = 1,492,092.27/1,334.56
6. Step 6: Final answer
   x = 1,118.04