Finding the Fourth Proportional to 2,606.51, 3,910.18 and 874.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.51 : 3,910.18 = 874.73 : x
2. Step 2: Convert to fraction form
   2,606.51/3,910.18 = 874.73/x
3. Step 3: Cross multiply
   2,606.51x = 3,910.18 × 874.73
4. Step 4: Simplify right side
   2,606.51x = 3,420,359.34
5. Step 5: Solve for x
   x = 3,420,359.34/2,606.51
6. Step 6: Final answer
   x = 1,312.24