Finding the Fourth Proportional to 2,076.48, 3,112.53 and 905.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.48 : 3,112.53 = 905.46 : x
2. Step 2: Convert to fraction form
   2,076.48/3,112.53 = 905.46/x
3. Step 3: Cross multiply
   2,076.48x = 3,112.53 × 905.46
4. Step 4: Simplify right side
   2,076.48x = 2,818,271.41
5. Step 5: Solve for x
   x = 2,818,271.41/2,076.48
6. Step 6: Final answer
   x = 1,357.23