Finding the Fourth Proportional to 2,562.78, 3,845.32 and 1,245.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,562.78 : 3,845.32 = 1,245.81 : x
2. Step 2: Convert to fraction form
   2,562.78/3,845.32 = 1,245.81/x
3. Step 3: Cross multiply
   2,562.78x = 3,845.32 × 1,245.81
4. Step 4: Simplify right side
   2,562.78x = 4,790,531.88
5. Step 5: Solve for x
   x = 4,790,531.88/2,562.78
6. Step 6: Final answer
   x = 1,869.27