Finding the Fourth Proportional to 2,086.45, 3,125.40 and 1,353.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.45 : 3,125.40 = 1,353.79 : x
2. Step 2: Convert to fraction form
   2,086.45/3,125.40 = 1,353.79/x
3. Step 3: Cross multiply
   2,086.45x = 3,125.40 × 1,353.79
4. Step 4: Simplify right side
   2,086.45x = 4,231,135.27
5. Step 5: Solve for x
   x = 4,231,135.27/2,086.45
6. Step 6: Final answer
   x = 2,027.91