Finding the Fourth Proportional to 2,607.96, 3,911.90 and 876.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.96 : 3,911.90 = 876.58 : x
2. Step 2: Convert to fraction form
   2,607.96/3,911.90 = 876.58/x
3. Step 3: Cross multiply
   2,607.96x = 3,911.90 × 876.58
4. Step 4: Simplify right side
   2,607.96x = 3,429,093.30
5. Step 5: Solve for x
   x = 3,429,093.30/2,607.96
6. Step 6: Final answer
   x = 1,314.86