Finding the Fourth Proportional to 2,353.74, 3,529.50 and 871.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,353.74 : 3,529.50 = 871.94 : x
2. Step 2: Convert to fraction form
   2,353.74/3,529.50 = 871.94/x
3. Step 3: Cross multiply
   2,353.74x = 3,529.50 × 871.94
4. Step 4: Simplify right side
   2,353.74x = 3,077,512.23
5. Step 5: Solve for x
   x = 3,077,512.23/2,353.74
6. Step 6: Final answer
   x = 1,307.50