Finding the Fourth Proportional to 2,607.67, 3,910.20 and 875.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.67 : 3,910.20 = 875.08 : x
2. Step 2: Convert to fraction form
   2,607.67/3,910.20 = 875.08/x
3. Step 3: Cross multiply
   2,607.67x = 3,910.20 × 875.08
4. Step 4: Simplify right side
   2,607.67x = 3,421,737.82
5. Step 5: Solve for x
   x = 3,421,737.82/2,607.67
6. Step 6: Final answer
   x = 1,312.18