Finding the Fourth Proportional to 2,956.84, 4,435.74 and 877.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,956.84 : 4,435.74 = 877.05 : x
2. Step 2: Convert to fraction form
   2,956.84/4,435.74 = 877.05/x
3. Step 3: Cross multiply
   2,956.84x = 4,435.74 × 877.05
4. Step 4: Simplify right side
   2,956.84x = 3,890,365.77
5. Step 5: Solve for x
   x = 3,890,365.77/2,956.84
6. Step 6: Final answer
   x = 1,315.72