Finding the Fourth Proportional to 2,075.60, 3,114.75 and 980.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.60 : 3,114.75 = 980.30 : x
2. Step 2: Convert to fraction form
   2,075.60/3,114.75 = 980.30/x
3. Step 3: Cross multiply
   2,075.60x = 3,114.75 × 980.30
4. Step 4: Simplify right side
   2,075.60x = 3,053,389.43
5. Step 5: Solve for x
   x = 3,053,389.43/2,075.60
6. Step 6: Final answer
   x = 1,471.09