Finding the Fourth Proportional to 3,415.59, 5,123.57 and 1,956.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,415.59 : 5,123.57 = 1,956.15 : x
2. Step 2: Convert to fraction form
   3,415.59/5,123.57 = 1,956.15/x
3. Step 3: Cross multiply
   3,415.59x = 5,123.57 × 1,956.15
4. Step 4: Simplify right side
   3,415.59x = 10,022,461.67
5. Step 5: Solve for x
   x = 10,022,461.67/3,415.59
6. Step 6: Final answer
   x = 2,934.33