Finding the Fourth Proportional to 2,287.63, 3,155.35 and 1,403.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.63 : 3,155.35 = 1,403.89 : x
2. Step 2: Convert to fraction form
   2,287.63/3,155.35 = 1,403.89/x
3. Step 3: Cross multiply
   2,287.63x = 3,155.35 × 1,403.89
4. Step 4: Simplify right side
   2,287.63x = 4,429,764.31
5. Step 5: Solve for x
   x = 4,429,764.31/2,287.63
6. Step 6: Final answer
   x = 1,936.40