Finding the Fourth Proportional to 1,075.98, 1,484.82 and 721.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,075.98 : 1,484.82 = 721.47 : x
2. Step 2: Convert to fraction form
   1,075.98/1,484.82 = 721.47/x
3. Step 3: Cross multiply
   1,075.98x = 1,484.82 × 721.47
4. Step 4: Simplify right side
   1,075.98x = 1,071,253.09
5. Step 5: Solve for x
   x = 1,071,253.09/1,075.98
6. Step 6: Final answer
   x = 995.61