Finding the Fourth Proportional to 2,342.46, 3,512.72 and 880.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,342.46 : 3,512.72 = 880.80 : x
2. Step 2: Convert to fraction form
   2,342.46/3,512.72 = 880.80/x
3. Step 3: Cross multiply
   2,342.46x = 3,512.72 × 880.80
4. Step 4: Simplify right side
   2,342.46x = 3,094,003.78
5. Step 5: Solve for x
   x = 3,094,003.78/2,342.46
6. Step 6: Final answer
   x = 1,320.84