Finding the Fourth Proportional to 2,475.36, 3,709.60 and 1,086.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,475.36 : 3,709.60 = 1,086.62 : x
2. Step 2: Convert to fraction form
   2,475.36/3,709.60 = 1,086.62/x
3. Step 3: Cross multiply
   2,475.36x = 3,709.60 × 1,086.62
4. Step 4: Simplify right side
   2,475.36x = 4,030,904.29
5. Step 5: Solve for x
   x = 4,030,904.29/2,475.36
6. Step 6: Final answer
   x = 1,628.41