Finding the Fourth Proportional to 1,778.76, 2,456.46 and 1,515.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,778.76 : 2,456.46 = 1,515.24 : x
2. Step 2: Convert to fraction form
   1,778.76/2,456.46 = 1,515.24/x
3. Step 3: Cross multiply
   1,778.76x = 2,456.46 × 1,515.24
4. Step 4: Simplify right side
   1,778.76x = 3,722,126.45
5. Step 5: Solve for x
   x = 3,722,126.45/1,778.76
6. Step 6: Final answer
   x = 2,092.54