Finding the Fourth Proportional to 2,271.42, 3,406.32 and 810.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.42 : 3,406.32 = 810.18 : x
2. Step 2: Convert to fraction form
   2,271.42/3,406.32 = 810.18/x
3. Step 3: Cross multiply
   2,271.42x = 3,406.32 × 810.18
4. Step 4: Simplify right side
   2,271.42x = 2,759,732.34
5. Step 5: Solve for x
   x = 2,759,732.34/2,271.42
6. Step 6: Final answer
   x = 1,214.98