Finding the Fourth Proportional to 2,340.60, 3,511.32 and 879.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,340.60 : 3,511.32 = 879.72 : x
2. Step 2: Convert to fraction form
   2,340.60/3,511.32 = 879.72/x
3. Step 3: Cross multiply
   2,340.60x = 3,511.32 × 879.72
4. Step 4: Simplify right side
   2,340.60x = 3,088,978.43
5. Step 5: Solve for x
   x = 3,088,978.43/2,340.60
6. Step 6: Final answer
   x = 1,319.74