Finding the Fourth Proportional to 2,075.90, 3,114.72 and 979.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.90 : 3,114.72 = 979.97 : x
2. Step 2: Convert to fraction form
   2,075.90/3,114.72 = 979.97/x
3. Step 3: Cross multiply
   2,075.90x = 3,114.72 × 979.97
4. Step 4: Simplify right side
   2,075.90x = 3,052,316.58
5. Step 5: Solve for x
   x = 3,052,316.58/2,075.90
6. Step 6: Final answer
   x = 1,470.36