Finding the Fourth Proportional to 1,780.89, 2,456.82 and 1,151.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.89 : 2,456.82 = 1,151.18 : x
2. Step 2: Convert to fraction form
   1,780.89/2,456.82 = 1,151.18/x
3. Step 3: Cross multiply
   1,780.89x = 2,456.82 × 1,151.18
4. Step 4: Simplify right side
   1,780.89x = 2,828,229.76
5. Step 5: Solve for x
   x = 2,828,229.76/1,780.89
6. Step 6: Final answer
   x = 1,588.10