Finding the Fourth Proportional to 2,478.11, 3,419.82 and 1,359.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.11 : 3,419.82 = 1,359.15 : x
2. Step 2: Convert to fraction form
   2,478.11/3,419.82 = 1,359.15/x
3. Step 3: Cross multiply
   2,478.11x = 3,419.82 × 1,359.15
4. Step 4: Simplify right side
   2,478.11x = 4,648,048.35
5. Step 5: Solve for x
   x = 4,648,048.35/2,478.11
6. Step 6: Final answer
   x = 1,875.65