Finding the Fourth Proportional to 1,573.94, 2,171.91 and 875.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.94 : 2,171.91 = 875.30 : x
2. Step 2: Convert to fraction form
   1,573.94/2,171.91 = 875.30/x
3. Step 3: Cross multiply
   1,573.94x = 2,171.91 × 875.30
4. Step 4: Simplify right side
   1,573.94x = 1,901,072.82
5. Step 5: Solve for x
   x = 1,901,072.82/1,573.94
6. Step 6: Final answer
   x = 1,207.84