Finding the Fourth Proportional to 1,646.51, 2,272.59 and 1,058.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.51 : 2,272.59 = 1,058.07 : x
2. Step 2: Convert to fraction form
   1,646.51/2,272.59 = 1,058.07/x
3. Step 3: Cross multiply
   1,646.51x = 2,272.59 × 1,058.07
4. Step 4: Simplify right side
   1,646.51x = 2,404,559.30
5. Step 5: Solve for x
   x = 2,404,559.30/1,646.51
6. Step 6: Final answer
   x = 1,460.40