Finding the Fourth Proportional to 2,078.02, 3,115.56 and 981.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.02 : 3,115.56 = 981.76 : x
2. Step 2: Convert to fraction form
   2,078.02/3,115.56 = 981.76/x
3. Step 3: Cross multiply
   2,078.02x = 3,115.56 × 981.76
4. Step 4: Simplify right side
   2,078.02x = 3,058,732.19
5. Step 5: Solve for x
   x = 3,058,732.19/2,078.02
6. Step 6: Final answer
   x = 1,471.95