Finding the Fourth Proportional to 2,957.67, 4,434.95 and 877.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,957.67 : 4,434.95 = 877.39 : x
2. Step 2: Convert to fraction form
   2,957.67/4,434.95 = 877.39/x
3. Step 3: Cross multiply
   2,957.67x = 4,434.95 × 877.39
4. Step 4: Simplify right side
   2,957.67x = 3,891,171.89
5. Step 5: Solve for x
   x = 3,891,171.89/2,957.67
6. Step 6: Final answer
   x = 1,315.62