Finding the Fourth Proportional to 2,611.41, 3,917.01 and 880.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.41 : 3,917.01 = 880.04 : x
2. Step 2: Convert to fraction form
   2,611.41/3,917.01 = 880.04/x
3. Step 3: Cross multiply
   2,611.41x = 3,917.01 × 880.04
4. Step 4: Simplify right side
   2,611.41x = 3,447,105.90
5. Step 5: Solve for x
   x = 3,447,105.90/2,611.41
6. Step 6: Final answer
   x = 1,320.02