Finding the Fourth Proportional to 2,546.08, 3,813.78 and 1,309.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,546.08 : 3,813.78 = 1,309.72 : x
2. Step 2: Convert to fraction form
   2,546.08/3,813.78 = 1,309.72/x
3. Step 3: Cross multiply
   2,546.08x = 3,813.78 × 1,309.72
4. Step 4: Simplify right side
   2,546.08x = 4,994,983.94
5. Step 5: Solve for x
   x = 4,994,983.94/2,546.08
6. Step 6: Final answer
   x = 1,961.83