Finding the Fourth Proportional to 2,075.51, 3,113.64 and 688.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.51 : 3,113.64 = 688.59 : x
2. Step 2: Convert to fraction form
   2,075.51/3,113.64 = 688.59/x
3. Step 3: Cross multiply
   2,075.51x = 3,113.64 × 688.59
4. Step 4: Simplify right side
   2,075.51x = 2,144,017.92
5. Step 5: Solve for x
   x = 2,144,017.92/2,075.51
6. Step 6: Final answer
   x = 1,033.01