Finding the Fourth Proportional to 3,003.27, 4,504.89 and 811.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,003.27 : 4,504.89 = 811.99 : x
2. Step 2: Convert to fraction form
   3,003.27/4,504.89 = 811.99/x
3. Step 3: Cross multiply
   3,003.27x = 4,504.89 × 811.99
4. Step 4: Simplify right side
   3,003.27x = 3,657,925.63
5. Step 5: Solve for x
   x = 3,657,925.63/3,003.27
6. Step 6: Final answer
   x = 1,217.98