Finding the Fourth Proportional to 2,205.47, 3,303.86 and 1,279.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.47 : 3,303.86 = 1,279.08 : x
2. Step 2: Convert to fraction form
   2,205.47/3,303.86 = 1,279.08/x
3. Step 3: Cross multiply
   2,205.47x = 3,303.86 × 1,279.08
4. Step 4: Simplify right side
   2,205.47x = 4,225,901.25
5. Step 5: Solve for x
   x = 4,225,901.25/2,205.47
6. Step 6: Final answer
   x = 1,916.10