Finding the Fourth Proportional to 2,958.10, 4,435.60 and 877.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,958.10 : 4,435.60 = 877.82 : x
2. Step 2: Convert to fraction form
   2,958.10/4,435.60 = 877.82/x
3. Step 3: Cross multiply
   2,958.10x = 4,435.60 × 877.82
4. Step 4: Simplify right side
   2,958.10x = 3,893,658.39
5. Step 5: Solve for x
   x = 3,893,658.39/2,958.10
6. Step 6: Final answer
   x = 1,316.27