Finding the Fourth Proportional to 2,721.32, 4,075.86 and 1,258.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721.32 : 4,075.86 = 1,258.28 : x
2. Step 2: Convert to fraction form
   2,721.32/4,075.86 = 1,258.28/x
3. Step 3: Cross multiply
   2,721.32x = 4,075.86 × 1,258.28
4. Step 4: Simplify right side
   2,721.32x = 5,128,573.12
5. Step 5: Solve for x
   x = 5,128,573.12/2,721.32
6. Step 6: Final answer
   x = 1,884.59