Finding the Fourth Proportional to 2,478.50, 3,420.33 and 1,359.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.50 : 3,420.33 = 1,359.46 : x
2. Step 2: Convert to fraction form
   2,478.50/3,420.33 = 1,359.46/x
3. Step 3: Cross multiply
   2,478.50x = 3,420.33 × 1,359.46
4. Step 4: Simplify right side
   2,478.50x = 4,649,797.11
5. Step 5: Solve for x
   x = 4,649,797.11/2,478.50
6. Step 6: Final answer
   x = 1,876.05