Finding the Fourth Proportional to 3,345.94, 5,018.94 and 880.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,345.94 : 5,018.94 = 880.76 : x
2. Step 2: Convert to fraction form
   3,345.94/5,018.94 = 880.76/x
3. Step 3: Cross multiply
   3,345.94x = 5,018.94 × 880.76
4. Step 4: Simplify right side
   3,345.94x = 4,420,481.59
5. Step 5: Solve for x
   x = 4,420,481.59/3,345.94
6. Step 6: Final answer
   x = 1,321.15