Finding the Fourth Proportional to 2,390.69, 3,299.15 and 1,342.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.69 : 3,299.15 = 1,342.75 : x
2. Step 2: Convert to fraction form
   2,390.69/3,299.15 = 1,342.75/x
3. Step 3: Cross multiply
   2,390.69x = 3,299.15 × 1,342.75
4. Step 4: Simplify right side
   2,390.69x = 4,429,933.66
5. Step 5: Solve for x
   x = 4,429,933.66/2,390.69
6. Step 6: Final answer
   x = 1,853.00