Finding the Fourth Proportional to 2,453.91, 3,385.53 and 1,391.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.91 : 3,385.53 = 1,391.52 : x
2. Step 2: Convert to fraction form
   2,453.91/3,385.53 = 1,391.52/x
3. Step 3: Cross multiply
   2,453.91x = 3,385.53 × 1,391.52
4. Step 4: Simplify right side
   2,453.91x = 4,711,032.71
5. Step 5: Solve for x
   x = 4,711,032.71/2,453.91
6. Step 6: Final answer
   x = 1,919.81