Finding the Fourth Proportional to 2,773.78, 3,827.82 and 1,531.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,773.78 : 3,827.82 = 1,531.78 : x
2. Step 2: Convert to fraction form
   2,773.78/3,827.82 = 1,531.78/x
3. Step 3: Cross multiply
   2,773.78x = 3,827.82 × 1,531.78
4. Step 4: Simplify right side
   2,773.78x = 5,863,378.12
5. Step 5: Solve for x
   x = 5,863,378.12/2,773.78
6. Step 6: Final answer
   x = 2,113.86