Finding the Fourth Proportional to 3,109.79, 4,663.22 and 1,259.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.79 : 4,663.22 = 1,259.50 : x
2. Step 2: Convert to fraction form
   3,109.79/4,663.22 = 1,259.50/x
3. Step 3: Cross multiply
   3,109.79x = 4,663.22 × 1,259.50
4. Step 4: Simplify right side
   3,109.79x = 5,873,325.59
5. Step 5: Solve for x
   x = 5,873,325.59/3,109.79
6. Step 6: Final answer
   x = 1,888.66