Finding the Fourth Proportional to 2,288.63, 3,156.90 and 1,403.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.63 : 3,156.90 = 1,403.57 : x
2. Step 2: Convert to fraction form
   2,288.63/3,156.90 = 1,403.57/x
3. Step 3: Cross multiply
   2,288.63x = 3,156.90 × 1,403.57
4. Step 4: Simplify right side
   2,288.63x = 4,430,930.13
5. Step 5: Solve for x
   x = 4,430,930.13/2,288.63
6. Step 6: Final answer
   x = 1,936.06