Finding the Fourth Proportional to 2,076.39, 3,114.72 and 981.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.39 : 3,114.72 = 981.81 : x
2. Step 2: Convert to fraction form
   2,076.39/3,114.72 = 981.81/x
3. Step 3: Cross multiply
   2,076.39x = 3,114.72 × 981.81
4. Step 4: Simplify right side
   2,076.39x = 3,058,063.24
5. Step 5: Solve for x
   x = 3,058,063.24/2,076.39
6. Step 6: Final answer
   x = 1,472.78