Finding the Fourth Proportional to 1,590.71, 2,192.72 and 1,058.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,590.71 : 2,192.72 = 1,058.72 : x
2. Step 2: Convert to fraction form
   1,590.71/2,192.72 = 1,058.72/x
3. Step 3: Cross multiply
   1,590.71x = 2,192.72 × 1,058.72
4. Step 4: Simplify right side
   1,590.71x = 2,321,460.26
5. Step 5: Solve for x
   x = 2,321,460.26/1,590.71
6. Step 6: Final answer
   x = 1,459.39