Finding the Fourth Proportional to 3,109.01, 4,663.69 and 1,260.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.01 : 4,663.69 = 1,260.15 : x
2. Step 2: Convert to fraction form
   3,109.01/4,663.69 = 1,260.15/x
3. Step 3: Cross multiply
   3,109.01x = 4,663.69 × 1,260.15
4. Step 4: Simplify right side
   3,109.01x = 5,876,948.95
5. Step 5: Solve for x
   x = 5,876,948.95/3,109.01
6. Step 6: Final answer
   x = 1,890.30