Finding the Fourth Proportional to 1,817.50, 2,508.78 and 1,118.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,817.50 : 2,508.78 = 1,118.89 : x
2. Step 2: Convert to fraction form
   1,817.50/2,508.78 = 1,118.89/x
3. Step 3: Cross multiply
   1,817.50x = 2,508.78 × 1,118.89
4. Step 4: Simplify right side
   1,817.50x = 2,807,048.85
5. Step 5: Solve for x
   x = 2,807,048.85/1,817.50
6. Step 6: Final answer
   x = 1,544.46