Finding the Fourth Proportional to 1,818.69, 2,511.45 and 1,155.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.69 : 2,511.45 = 1,155.75 : x
2. Step 2: Convert to fraction form
   1,818.69/2,511.45 = 1,155.75/x
3. Step 3: Cross multiply
   1,818.69x = 2,511.45 × 1,155.75
4. Step 4: Simplify right side
   1,818.69x = 2,902,608.34
5. Step 5: Solve for x
   x = 2,902,608.34/1,818.69
6. Step 6: Final answer
   x = 1,595.99