Finding the Fourth Proportional to 1,871.28, 2,582.01 and 1,172.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.28 : 2,582.01 = 1,172.25 : x
2. Step 2: Convert to fraction form
   1,871.28/2,582.01 = 1,172.25/x
3. Step 3: Cross multiply
   1,871.28x = 2,582.01 × 1,172.25
4. Step 4: Simplify right side
   1,871.28x = 3,026,761.22
5. Step 5: Solve for x
   x = 3,026,761.22/1,871.28
6. Step 6: Final answer
   x = 1,617.48