Finding the Fourth Proportional to 2,058.51, 3,087.90 and 672.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.51 : 3,087.90 = 672.00 : x
2. Step 2: Convert to fraction form
   2,058.51/3,087.90 = 672.00/x
3. Step 3: Cross multiply
   2,058.51x = 3,087.90 × 672.00
4. Step 4: Simplify right side
   2,058.51x = 2,075,055.33
5. Step 5: Solve for x
   x = 2,075,055.33/2,058.51
6. Step 6: Final answer
   x = 1,008.04