Finding the Fourth Proportional to 2,075.24, 3,112.50 and 688.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.24 : 3,112.50 = 688.44 : x
2. Step 2: Convert to fraction form
   2,075.24/3,112.50 = 688.44/x
3. Step 3: Cross multiply
   2,075.24x = 3,112.50 × 688.44
4. Step 4: Simplify right side
   2,075.24x = 2,142,769.50
5. Step 5: Solve for x
   x = 2,142,769.50/2,075.24
6. Step 6: Final answer
   x = 1,032.54