Finding the Fourth Proportional to 2,043.69, 3,066.54 and 811.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,043.69 : 3,066.54 = 811.07 : x
2. Step 2: Convert to fraction form
   2,043.69/3,066.54 = 811.07/x
3. Step 3: Cross multiply
   2,043.69x = 3,066.54 × 811.07
4. Step 4: Simplify right side
   2,043.69x = 2,487,178.60
5. Step 5: Solve for x
   x = 2,487,178.60/2,043.69
6. Step 6: Final answer
   x = 1,217.00