Finding the Fourth Proportional to 2,956.79, 4,435.59 and 876.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,956.79 : 4,435.59 = 876.96 : x
2. Step 2: Convert to fraction form
   2,956.79/4,435.59 = 876.96/x
3. Step 3: Cross multiply
   2,956.79x = 4,435.59 × 876.96
4. Step 4: Simplify right side
   2,956.79x = 3,889,835.01
5. Step 5: Solve for x
   x = 3,889,835.01/2,956.79
6. Step 6: Final answer
   x = 1,315.56