Finding the Fourth Proportional to 2,885.32, 3,979.68 and 1,766.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,885.32 : 3,979.68 = 1,766.50 : x
2. Step 2: Convert to fraction form
   2,885.32/3,979.68 = 1,766.50/x
3. Step 3: Cross multiply
   2,885.32x = 3,979.68 × 1,766.50
4. Step 4: Simplify right side
   2,885.32x = 7,030,104.72
5. Step 5: Solve for x
   x = 7,030,104.72/2,885.32
6. Step 6: Final answer
   x = 2,436.51