Finding the Fourth Proportional to 2,883.78, 3,979.50 and 1,766.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,883.78 : 3,979.50 = 1,766.58 : x
2. Step 2: Convert to fraction form
   2,883.78/3,979.50 = 1,766.58/x
3. Step 3: Cross multiply
   2,883.78x = 3,979.50 × 1,766.58
4. Step 4: Simplify right side
   2,883.78x = 7,030,105.11
5. Step 5: Solve for x
   x = 7,030,105.11/2,883.78
6. Step 6: Final answer
   x = 2,437.81