Finding the Fourth Proportional to 2,790.43, 3,850.78 and 1,531.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,790.43 : 3,850.78 = 1,531.48 : x
2. Step 2: Convert to fraction form
   2,790.43/3,850.78 = 1,531.48/x
3. Step 3: Cross multiply
   2,790.43x = 3,850.78 × 1,531.48
4. Step 4: Simplify right side
   2,790.43x = 5,897,392.55
5. Step 5: Solve for x
   x = 5,897,392.55/2,790.43
6. Step 6: Final answer
   x = 2,113.44