Finding the Fourth Proportional to 2,882.91, 3,978.72 and 1,764.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,882.91 : 3,978.72 = 1,764.60 : x
2. Step 2: Convert to fraction form
   2,882.91/3,978.72 = 1,764.60/x
3. Step 3: Cross multiply
   2,882.91x = 3,978.72 × 1,764.60
4. Step 4: Simplify right side
   2,882.91x = 7,020,834.39
5. Step 5: Solve for x
   x = 7,020,834.39/2,882.91
6. Step 6: Final answer
   x = 2,435.33