Finding the Fourth Proportional to 3,109.55, 4,291.22 and 1,783.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.55 : 4,291.22 = 1,783.25 : x
2. Step 2: Convert to fraction form
   3,109.55/4,291.22 = 1,783.25/x
3. Step 3: Cross multiply
   3,109.55x = 4,291.22 × 1,783.25
4. Step 4: Simplify right side
   3,109.55x = 7,652,287.69
5. Step 5: Solve for x
   x = 7,652,287.69/3,109.55
6. Step 6: Final answer
   x = 2,460.90