Finding the Fourth Proportional to 2,610.16, 3,912.72 and 877.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.16 : 3,912.72 = 877.84 : x
2. Step 2: Convert to fraction form
   2,610.16/3,912.72 = 877.84/x
3. Step 3: Cross multiply
   2,610.16x = 3,912.72 × 877.84
4. Step 4: Simplify right side
   2,610.16x = 3,434,742.12
5. Step 5: Solve for x
   x = 3,434,742.12/2,610.16
6. Step 6: Final answer
   x = 1,315.91