Finding the Fourth Proportional to 1,025.82, 1,415.61 and 627.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025.82 : 1,415.61 = 627.35 : x
2. Step 2: Convert to fraction form
   1,025.82/1,415.61 = 627.35/x
3. Step 3: Cross multiply
   1,025.82x = 1,415.61 × 627.35
4. Step 4: Simplify right side
   1,025.82x = 888,075.86
5. Step 5: Solve for x
   x = 888,075.86/1,025.82
6. Step 6: Final answer
   x = 865.72