Finding the Fourth Proportional to 3,124.05, 4,685.78 and 1,275.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,124.05 : 4,685.78 = 1,275.33 : x
2. Step 2: Convert to fraction form
   3,124.05/4,685.78 = 1,275.33/x
3. Step 3: Cross multiply
   3,124.05x = 4,685.78 × 1,275.33
4. Step 4: Simplify right side
   3,124.05x = 5,975,909.43
5. Step 5: Solve for x
   x = 5,975,909.43/3,124.05
6. Step 6: Final answer
   x = 1,912.87