Finding the Fourth Proportional to 1,574.04, 2,172.06 and 910.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,574.04 : 2,172.06 = 910.83 : x
2. Step 2: Convert to fraction form
   1,574.04/2,172.06 = 910.83/x
3. Step 3: Cross multiply
   1,574.04x = 2,172.06 × 910.83
4. Step 4: Simplify right side
   1,574.04x = 1,978,377.41
5. Step 5: Solve for x
   x = 1,978,377.41/1,574.04
6. Step 6: Final answer
   x = 1,256.88