Finding the Fourth Proportional to 1,075.16, 1,482.72 and 681.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,075.16 : 1,482.72 = 681.48 : x
2. Step 2: Convert to fraction form
   1,075.16/1,482.72 = 681.48/x
3. Step 3: Cross multiply
   1,075.16x = 1,482.72 × 681.48
4. Step 4: Simplify right side
   1,075.16x = 1,010,444.03
5. Step 5: Solve for x
   x = 1,010,444.03/1,075.16
6. Step 6: Final answer
   x = 939.81