Finding the Fourth Proportional to 2,231.69, 3,080.36 and 1,347.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.69 : 3,080.36 = 1,347.55 : x
2. Step 2: Convert to fraction form
   2,231.69/3,080.36 = 1,347.55/x
3. Step 3: Cross multiply
   2,231.69x = 3,080.36 × 1,347.55
4. Step 4: Simplify right side
   2,231.69x = 4,150,934.79
5. Step 5: Solve for x
   x = 4,150,934.79/2,231.69
6. Step 6: Final answer
   x = 1,860.00