Finding the Fourth Proportional to 3,109.89, 4,663.23 and 1,260.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.89 : 4,663.23 = 1,260.51 : x
2. Step 2: Convert to fraction form
   3,109.89/4,663.23 = 1,260.51/x
3. Step 3: Cross multiply
   3,109.89x = 4,663.23 × 1,260.51
4. Step 4: Simplify right side
   3,109.89x = 5,878,048.05
5. Step 5: Solve for x
   x = 5,878,048.05/3,109.89
6. Step 6: Final answer
   x = 1,890.11