Finding the Fourth Proportional to 2,158.76, 3,235.96 and 841.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.76 : 3,235.96 = 841.69 : x
2. Step 2: Convert to fraction form
   2,158.76/3,235.96 = 841.69/x
3. Step 3: Cross multiply
   2,158.76x = 3,235.96 × 841.69
4. Step 4: Simplify right side
   2,158.76x = 2,723,664.98
5. Step 5: Solve for x
   x = 2,723,664.98/2,158.76
6. Step 6: Final answer
   x = 1,261.68