Finding the Fourth Proportional to 3,109.25, 4,663.38 and 1,259.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.25 : 4,663.38 = 1,259.89 : x
2. Step 2: Convert to fraction form
   3,109.25/4,663.38 = 1,259.89/x
3. Step 3: Cross multiply
   3,109.25x = 4,663.38 × 1,259.89
4. Step 4: Simplify right side
   3,109.25x = 5,875,345.83
5. Step 5: Solve for x
   x = 5,875,345.83/3,109.25
6. Step 6: Final answer
   x = 1,889.63