Finding the Fourth Proportional to 2,403.83, 3,317.28 and 1,355.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,403.83 : 3,317.28 = 1,355.89 : x
2. Step 2: Convert to fraction form
   2,403.83/3,317.28 = 1,355.89/x
3. Step 3: Cross multiply
   2,403.83x = 3,317.28 × 1,355.89
4. Step 4: Simplify right side
   2,403.83x = 4,497,850.19
5. Step 5: Solve for x
   x = 4,497,850.19/2,403.83
6. Step 6: Final answer
   x = 1,871.12