Finding the Fourth Proportional to 3,519.25, 5,279.18 and 1,328.00

Step by Step Solution

1. Step 1: Write the proportion equation
   3,519.25 : 5,279.18 = 1,328.00 : x
2. Step 2: Convert to fraction form
   3,519.25/5,279.18 = 1,328.00/x
3. Step 3: Cross multiply
   3,519.25x = 5,279.18 × 1,328.00
4. Step 4: Simplify right side
   3,519.25x = 7,010,718.00
5. Step 5: Solve for x
   x = 7,010,718.00/3,519.25
6. Step 6: Final answer
   x = 1,992.11