Finding the Fourth Proportional to 2,010.78, 3,013.83 and 1,260.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.78 : 3,013.83 = 1,260.63 : x
2. Step 2: Convert to fraction form
   2,010.78/3,013.83 = 1,260.63/x
3. Step 3: Cross multiply
   2,010.78x = 3,013.83 × 1,260.63
4. Step 4: Simplify right side
   2,010.78x = 3,799,324.51
5. Step 5: Solve for x
   x = 3,799,324.51/2,010.78
6. Step 6: Final answer
   x = 1,889.48