Finding the Fourth Proportional to 2,119.42, 3,180.36 and 886.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,119.42 : 3,180.36 = 886.72 : x
2. Step 2: Convert to fraction form
   2,119.42/3,180.36 = 886.72/x
3. Step 3: Cross multiply
   2,119.42x = 3,180.36 × 886.72
4. Step 4: Simplify right side
   2,119.42x = 2,820,099.10
5. Step 5: Solve for x
   x = 2,820,099.10/2,119.42
6. Step 6: Final answer
   x = 1,330.60