Finding the Fourth Proportional to 2,607.10, 3,910.69 and 875.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.10 : 3,910.69 = 875.74 : x
2. Step 2: Convert to fraction form
   2,607.10/3,910.69 = 875.74/x
3. Step 3: Cross multiply
   2,607.10x = 3,910.69 × 875.74
4. Step 4: Simplify right side
   2,607.10x = 3,424,747.66
5. Step 5: Solve for x
   x = 3,424,747.66/2,607.10
6. Step 6: Final answer
   x = 1,313.62