Finding the Fourth Proportional to 2,075.83, 3,112.97 and 688.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.83 : 3,112.97 = 688.84 : x
2. Step 2: Convert to fraction form
   2,075.83/3,112.97 = 688.84/x
3. Step 3: Cross multiply
   2,075.83x = 3,112.97 × 688.84
4. Step 4: Simplify right side
   2,075.83x = 2,144,327.03
5. Step 5: Solve for x
   x = 2,144,327.03/2,075.83
6. Step 6: Final answer
   x = 1,033.00