Finding the Fourth Proportional to 2,609.04, 3,914.16 and 877.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.04 : 3,914.16 = 877.62 : x
2. Step 2: Convert to fraction form
   2,609.04/3,914.16 = 877.62/x
3. Step 3: Cross multiply
   2,609.04x = 3,914.16 × 877.62
4. Step 4: Simplify right side
   2,609.04x = 3,435,145.10
5. Step 5: Solve for x
   x = 3,435,145.10/2,609.04
6. Step 6: Final answer
   x = 1,316.63