Finding the Fourth Proportional to 2,075.93, 3,112.71 and 689.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.93 : 3,112.71 = 689.16 : x
2. Step 2: Convert to fraction form
   2,075.93/3,112.71 = 689.16/x
3. Step 3: Cross multiply
   2,075.93x = 3,112.71 × 689.16
4. Step 4: Simplify right side
   2,075.93x = 2,145,155.22
5. Step 5: Solve for x
   x = 2,145,155.22/2,075.93
6. Step 6: Final answer
   x = 1,033.35