Finding the Fourth Proportional to 3,713.78, 5,124.78 and 2,141.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,713.78 : 5,124.78 = 2,141.76 : x
2. Step 2: Convert to fraction form
   3,713.78/5,124.78 = 2,141.76/x
3. Step 3: Cross multiply
   3,713.78x = 5,124.78 × 2,141.76
4. Step 4: Simplify right side
   3,713.78x = 10,976,048.81
5. Step 5: Solve for x
   x = 10,976,048.81/3,713.78
6. Step 6: Final answer
   x = 2,955.49