Finding the Fourth Proportional to 2,879.50, 4,320.72 and 1,235.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,879.50 : 4,320.72 = 1,235.60 : x
2. Step 2: Convert to fraction form
   2,879.50/4,320.72 = 1,235.60/x
3. Step 3: Cross multiply
   2,879.50x = 4,320.72 × 1,235.60
4. Step 4: Simplify right side
   2,879.50x = 5,338,681.63
5. Step 5: Solve for x
   x = 5,338,681.63/2,879.50
6. Step 6: Final answer
   x = 1,854.03