Finding the Fourth Proportional to 2,074.88, 3,111.04 and 977.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.88 : 3,111.04 = 977.92 : x
2. Step 2: Convert to fraction form
   2,074.88/3,111.04 = 977.92/x
3. Step 3: Cross multiply
   2,074.88x = 3,111.04 × 977.92
4. Step 4: Simplify right side
   2,074.88x = 3,042,348.24
5. Step 5: Solve for x
   x = 3,042,348.24/2,074.88
6. Step 6: Final answer
   x = 1,466.28