Finding the Fourth Proportional to 3,651.30, 5,477.83 and 1,279.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,651.30 : 5,477.83 = 1,279.09 : x
2. Step 2: Convert to fraction form
   3,651.30/5,477.83 = 1,279.09/x
3. Step 3: Cross multiply
   3,651.30x = 5,477.83 × 1,279.09
4. Step 4: Simplify right side
   3,651.30x = 7,006,641.22
5. Step 5: Solve for x
   x = 7,006,641.22/3,651.30
6. Step 6: Final answer
   x = 1,918.94