Finding the Fourth Proportional to 2,341.60, 3,511.88 and 880.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,341.60 : 3,511.88 = 880.72 : x
2. Step 2: Convert to fraction form
   2,341.60/3,511.88 = 880.72/x
3. Step 3: Cross multiply
   2,341.60x = 3,511.88 × 880.72
4. Step 4: Simplify right side
   2,341.60x = 3,092,982.95
5. Step 5: Solve for x
   x = 3,092,982.95/2,341.60
6. Step 6: Final answer
   x = 1,320.88