Finding the Fourth Proportional to 2,043.46, 3,065.01 and 810.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,043.46 : 3,065.01 = 810.55 : x
2. Step 2: Convert to fraction form
   2,043.46/3,065.01 = 810.55/x
3. Step 3: Cross multiply
   2,043.46x = 3,065.01 × 810.55
4. Step 4: Simplify right side
   2,043.46x = 2,484,339.80
5. Step 5: Solve for x
   x = 2,484,339.80/2,043.46
6. Step 6: Final answer
   x = 1,215.75