Finding the Fourth Proportional to 2,422.69, 3,342.79 and 1,427.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,422.69 : 3,342.79 = 1,427.60 : x
2. Step 2: Convert to fraction form
   2,422.69/3,342.79 = 1,427.60/x
3. Step 3: Cross multiply
   2,422.69x = 3,342.79 × 1,427.60
4. Step 4: Simplify right side
   2,422.69x = 4,772,177.15
5. Step 5: Solve for x
   x = 4,772,177.15/2,422.69
6. Step 6: Final answer
   x = 1,969.79