Finding the Fourth Proportional to 2,758.98, 4,131.70 and 1,782.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,758.98 : 4,131.70 = 1,782.12 : x
2. Step 2: Convert to fraction form
   2,758.98/4,131.70 = 1,782.12/x
3. Step 3: Cross multiply
   2,758.98x = 4,131.70 × 1,782.12
4. Step 4: Simplify right side
   2,758.98x = 7,363,185.20
5. Step 5: Solve for x
   x = 7,363,185.20/2,758.98
6. Step 6: Final answer
   x = 2,668.81