Finding the Fourth Proportional to 2,921.76, 4,382.37 and 1,190.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,921.76 : 4,382.37 = 1,190.25 : x
2. Step 2: Convert to fraction form
   2,921.76/4,382.37 = 1,190.25/x
3. Step 3: Cross multiply
   2,921.76x = 4,382.37 × 1,190.25
4. Step 4: Simplify right side
   2,921.76x = 5,216,115.89
5. Step 5: Solve for x
   x = 5,216,115.89/2,921.76
6. Step 6: Final answer
   x = 1,785.27