Finding the Fourth Proportional to 2,564.45, 3,843.72 and 1,248.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,564.45 : 3,843.72 = 1,248.86 : x
2. Step 2: Convert to fraction form
   2,564.45/3,843.72 = 1,248.86/x
3. Step 3: Cross multiply
   2,564.45x = 3,843.72 × 1,248.86
4. Step 4: Simplify right side
   2,564.45x = 4,800,268.16
5. Step 5: Solve for x
   x = 4,800,268.16/2,564.45
6. Step 6: Final answer
   x = 1,871.85