Finding the Fourth Proportional to 2,045.34, 3,068.29 and 812.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.34 : 3,068.29 = 812.87 : x
2. Step 2: Convert to fraction form
   2,045.34/3,068.29 = 812.87/x
3. Step 3: Cross multiply
   2,045.34x = 3,068.29 × 812.87
4. Step 4: Simplify right side
   2,045.34x = 2,494,120.89
5. Step 5: Solve for x
   x = 2,494,120.89/2,045.34
6. Step 6: Final answer
   x = 1,219.42