Finding the Fourth Proportional to 2,075.63, 3,114.32 and 980.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.63 : 3,114.32 = 980.78 : x
2. Step 2: Convert to fraction form
   2,075.63/3,114.32 = 980.78/x
3. Step 3: Cross multiply
   2,075.63x = 3,114.32 × 980.78
4. Step 4: Simplify right side
   2,075.63x = 3,054,442.29
5. Step 5: Solve for x
   x = 3,054,442.29/2,075.63
6. Step 6: Final answer
   x = 1,471.58