Finding the Fourth Proportional to 2,764.80, 3,818.52 and 2,142.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,764.80 : 3,818.52 = 2,142.84 : x
2. Step 2: Convert to fraction form
   2,764.80/3,818.52 = 2,142.84/x
3. Step 3: Cross multiply
   2,764.80x = 3,818.52 × 2,142.84
4. Step 4: Simplify right side
   2,764.80x = 8,182,491.72
5. Step 5: Solve for x
   x = 8,182,491.72/2,764.80
6. Step 6: Final answer
   x = 2,959.52