Finding the Fourth Proportional to 2,630.24, 3,945.57 and 875.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.24 : 3,945.57 = 875.18 : x
2. Step 2: Convert to fraction form
   2,630.24/3,945.57 = 875.18/x
3. Step 3: Cross multiply
   2,630.24x = 3,945.57 × 875.18
4. Step 4: Simplify right side
   2,630.24x = 3,453,083.95
5. Step 5: Solve for x
   x = 3,453,083.95/2,630.24
6. Step 6: Final answer
   x = 1,312.84