Finding the Fourth Proportional to 2,134.78, 2,945.05 and 1,250.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,134.78 : 2,945.05 = 1,250.20 : x
2. Step 2: Convert to fraction form
   2,134.78/2,945.05 = 1,250.20/x
3. Step 3: Cross multiply
   2,134.78x = 2,945.05 × 1,250.20
4. Step 4: Simplify right side
   2,134.78x = 3,681,901.51
5. Step 5: Solve for x
   x = 3,681,901.51/2,134.78
6. Step 6: Final answer
   x = 1,724.72