Finding the Fourth Proportional to 2,403.81, 3,602.89 and 1,086.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,403.81 : 3,602.89 = 1,086.03 : x
2. Step 2: Convert to fraction form
   2,403.81/3,602.89 = 1,086.03/x
3. Step 3: Cross multiply
   2,403.81x = 3,602.89 × 1,086.03
4. Step 4: Simplify right side
   2,403.81x = 3,912,825.90
5. Step 5: Solve for x
   x = 3,912,825.90/2,403.81
6. Step 6: Final answer
   x = 1,627.76