Finding the Fourth Proportional to 2,783.67, 4,176.34 and 1,117.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,783.67 : 4,176.34 = 1,117.78 : x
2. Step 2: Convert to fraction form
   2,783.67/4,176.34 = 1,117.78/x
3. Step 3: Cross multiply
   2,783.67x = 4,176.34 × 1,117.78
4. Step 4: Simplify right side
   2,783.67x = 4,668,229.33
5. Step 5: Solve for x
   x = 4,668,229.33/2,783.67
6. Step 6: Final answer
   x = 1,677.01