Finding the Fourth Proportional to 2,045.56, 3,066.49 and 812.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.56 : 3,066.49 = 812.69 : x
2. Step 2: Convert to fraction form
   2,045.56/3,066.49 = 812.69/x
3. Step 3: Cross multiply
   2,045.56x = 3,066.49 × 812.69
4. Step 4: Simplify right side
   2,045.56x = 2,492,105.76
5. Step 5: Solve for x
   x = 2,492,105.76/2,045.56
6. Step 6: Final answer
   x = 1,218.30