Finding the Fourth Proportional to 2,347.91, 3,520.83 and 1,115.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,347.91 : 3,520.83 = 1,115.67 : x
2. Step 2: Convert to fraction form
   2,347.91/3,520.83 = 1,115.67/x
3. Step 3: Cross multiply
   2,347.91x = 3,520.83 × 1,115.67
4. Step 4: Simplify right side
   2,347.91x = 3,928,101.79
5. Step 5: Solve for x
   x = 3,928,101.79/2,347.91
6. Step 6: Final answer
   x = 1,673.02