Finding the Fourth Proportional to 2,076.71, 3,112.29 and 981.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.71 : 3,112.29 = 981.36 : x
2. Step 2: Convert to fraction form
   2,076.71/3,112.29 = 981.36/x
3. Step 3: Cross multiply
   2,076.71x = 3,112.29 × 981.36
4. Step 4: Simplify right side
   2,076.71x = 3,054,276.91
5. Step 5: Solve for x
   x = 3,054,276.91/2,076.71
6. Step 6: Final answer
   x = 1,470.73