Finding the Fourth Proportional to 2,077.58, 3,117.13 and 981.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.58 : 3,117.13 = 981.12 : x
2. Step 2: Convert to fraction form
   2,077.58/3,117.13 = 981.12/x
3. Step 3: Cross multiply
   2,077.58x = 3,117.13 × 981.12
4. Step 4: Simplify right side
   2,077.58x = 3,058,278.59
5. Step 5: Solve for x
   x = 3,058,278.59/2,077.58
6. Step 6: Final answer
   x = 1,472.04