Finding the Fourth Proportional to 2,903.20, 4,355.55 and 1,259.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,903.20 : 4,355.55 = 1,259.37 : x
2. Step 2: Convert to fraction form
   2,903.20/4,355.55 = 1,259.37/x
3. Step 3: Cross multiply
   2,903.20x = 4,355.55 × 1,259.37
4. Step 4: Simplify right side
   2,903.20x = 5,485,249.00
5. Step 5: Solve for x
   x = 5,485,249.00/2,903.20
6. Step 6: Final answer
   x = 1,889.38