Finding the Fourth Proportional to 1,515.18, 2,269.89 and 863.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515.18 : 2,269.89 = 863.94 : x
2. Step 2: Convert to fraction form
   1,515.18/2,269.89 = 863.94/x
3. Step 3: Cross multiply
   1,515.18x = 2,269.89 × 863.94
4. Step 4: Simplify right side
   1,515.18x = 1,961,048.77
5. Step 5: Solve for x
   x = 1,961,048.77/1,515.18
6. Step 6: Final answer
   x = 1,294.27