Finding the Fourth Proportional to 2,428.79, 3,641.76 and 1,112.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.79 : 3,641.76 = 1,112.54 : x
2. Step 2: Convert to fraction form
   2,428.79/3,641.76 = 1,112.54/x
3. Step 3: Cross multiply
   2,428.79x = 3,641.76 × 1,112.54
4. Step 4: Simplify right side
   2,428.79x = 4,051,585.46
5. Step 5: Solve for x
   x = 4,051,585.46/2,428.79
6. Step 6: Final answer
   x = 1,668.15