Finding the Fourth Proportional to 1,075.77, 1,483.55 and 722.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,075.77 : 1,483.55 = 722.49 : x
2. Step 2: Convert to fraction form
   1,075.77/1,483.55 = 722.49/x
3. Step 3: Cross multiply
   1,075.77x = 1,483.55 × 722.49
4. Step 4: Simplify right side
   1,075.77x = 1,071,846.43
5. Step 5: Solve for x
   x = 1,071,846.43/1,075.77
6. Step 6: Final answer
   x = 996.35