Finding the Fourth Proportional to 2,630.56, 3,946.06 and 875.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.56 : 3,946.06 = 875.20 : x
2. Step 2: Convert to fraction form
   2,630.56/3,946.06 = 875.20/x
3. Step 3: Cross multiply
   2,630.56x = 3,946.06 × 875.20
4. Step 4: Simplify right side
   2,630.56x = 3,453,591.71
5. Step 5: Solve for x
   x = 3,453,591.71/2,630.56
6. Step 6: Final answer
   x = 1,312.87