Finding the Fourth Proportional to 2,957.79, 4,436.76 and 877.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,957.79 : 4,436.76 = 877.82 : x
2. Step 2: Convert to fraction form
   2,957.79/4,436.76 = 877.82/x
3. Step 3: Cross multiply
   2,957.79x = 4,436.76 × 877.82
4. Step 4: Simplify right side
   2,957.79x = 3,894,654.48
5. Step 5: Solve for x
   x = 3,894,654.48/2,957.79
6. Step 6: Final answer
   x = 1,316.74