Finding the Fourth Proportional to 1,574.50, 2,172.81 and 875.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,574.50 : 2,172.81 = 875.86 : x
2. Step 2: Convert to fraction form
   1,574.50/2,172.81 = 875.86/x
3. Step 3: Cross multiply
   1,574.50x = 2,172.81 × 875.86
4. Step 4: Simplify right side
   1,574.50x = 1,903,077.37
5. Step 5: Solve for x
   x = 1,903,077.37/1,574.50
6. Step 6: Final answer
   x = 1,208.69