Finding the Fourth Proportional to 1,783.96, 2,456.76 and 1,778.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.96 : 2,456.76 = 1,778.56 : x
2. Step 2: Convert to fraction form
   1,783.96/2,456.76 = 1,778.56/x
3. Step 3: Cross multiply
   1,783.96x = 2,456.76 × 1,778.56
4. Step 4: Simplify right side
   1,783.96x = 4,369,495.07
5. Step 5: Solve for x
   x = 4,369,495.07/1,783.96
6. Step 6: Final answer
   x = 2,449.32