Finding the Fourth Proportional to 2,918.50, 4,378.61 and 1,359.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,918.50 : 4,378.61 = 1,359.42 : x
2. Step 2: Convert to fraction form
   2,918.50/4,378.61 = 1,359.42/x
3. Step 3: Cross multiply
   2,918.50x = 4,378.61 × 1,359.42
4. Step 4: Simplify right side
   2,918.50x = 5,952,373.40
5. Step 5: Solve for x
   x = 5,952,373.40/2,918.50
6. Step 6: Final answer
   x = 2,039.53