Finding the Fourth Proportional to 1,871.29, 2,582.72 and 1,172.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.29 : 2,582.72 = 1,172.26 : x
2. Step 2: Convert to fraction form
   1,871.29/2,582.72 = 1,172.26/x
3. Step 3: Cross multiply
   1,871.29x = 2,582.72 × 1,172.26
4. Step 4: Simplify right side
   1,871.29x = 3,027,619.35
5. Step 5: Solve for x
   x = 3,027,619.35/1,871.29
6. Step 6: Final answer
   x = 1,617.93