Finding the Fourth Proportional to 1,075.82, 1,614.72 and 665.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,075.82 : 1,614.72 = 665.76 : x
2. Step 2: Convert to fraction form
   1,075.82/1,614.72 = 665.76/x
3. Step 3: Cross multiply
   1,075.82x = 1,614.72 × 665.76
4. Step 4: Simplify right side
   1,075.82x = 1,075,015.99
5. Step 5: Solve for x
   x = 1,075,015.99/1,075.82
6. Step 6: Final answer
   x = 999.26