Finding the Fourth Proportional to 2,478.37, 3,420.16 and 1,359.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.37 : 3,420.16 = 1,359.32 : x
2. Step 2: Convert to fraction form
   2,478.37/3,420.16 = 1,359.32/x
3. Step 3: Cross multiply
   2,478.37x = 3,420.16 × 1,359.32
4. Step 4: Simplify right side
   2,478.37x = 4,649,087.25
5. Step 5: Solve for x
   x = 4,649,087.25/2,478.37
6. Step 6: Final answer
   x = 1,875.86