Finding the Fourth Proportional to 2,075.04, 3,112.74 and 978.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.04 : 3,112.74 = 978.84 : x
2. Step 2: Convert to fraction form
   2,075.04/3,112.74 = 978.84/x
3. Step 3: Cross multiply
   2,075.04x = 3,112.74 × 978.84
4. Step 4: Simplify right side
   2,075.04x = 3,046,874.42
5. Step 5: Solve for x
   x = 3,046,874.42/2,075.04
6. Step 6: Final answer
   x = 1,468.34