Finding the Fourth Proportional to 1,075.69, 1,484.60 and 627.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,075.69 : 1,484.60 = 627.71 : x
2. Step 2: Convert to fraction form
   1,075.69/1,484.60 = 627.71/x
3. Step 3: Cross multiply
   1,075.69x = 1,484.60 × 627.71
4. Step 4: Simplify right side
   1,075.69x = 931,890.84
5. Step 5: Solve for x
   x = 931,890.84/1,075.69
6. Step 6: Final answer
   x = 866.32