Finding the Fourth Proportional to 2,415.10, 3,620.49 and 1,259.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415.10 : 3,620.49 = 1,259.50 : x
2. Step 2: Convert to fraction form
   2,415.10/3,620.49 = 1,259.50/x
3. Step 3: Cross multiply
   2,415.10x = 3,620.49 × 1,259.50
4. Step 4: Simplify right side
   2,415.10x = 4,560,007.16
5. Step 5: Solve for x
   x = 4,560,007.16/2,415.10
6. Step 6: Final answer
   x = 1,888.12