Finding the Fourth Proportional to 2,288.21, 3,155.85 and 1,403.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.21 : 3,155.85 = 1,403.42 : x
2. Step 2: Convert to fraction form
   2,288.21/3,155.85 = 1,403.42/x
3. Step 3: Cross multiply
   2,288.21x = 3,155.85 × 1,403.42
4. Step 4: Simplify right side
   2,288.21x = 4,428,967.23
5. Step 5: Solve for x
   x = 4,428,967.23/2,288.21
6. Step 6: Final answer
   x = 1,935.56