Finding the Fourth Proportional to 2,356.29, 3,535.47 and 1,123.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,356.29 : 3,535.47 = 1,123.71 : x
2. Step 2: Convert to fraction form
   2,356.29/3,535.47 = 1,123.71/x
3. Step 3: Cross multiply
   2,356.29x = 3,535.47 × 1,123.71
4. Step 4: Simplify right side
   2,356.29x = 3,972,842.99
5. Step 5: Solve for x
   x = 3,972,842.99/2,356.29
6. Step 6: Final answer
   x = 1,686.06