Finding the Fourth Proportional to 1,573.82, 2,171.87 and 875.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.82 : 2,171.87 = 875.19 : x
2. Step 2: Convert to fraction form
   1,573.82/2,171.87 = 875.19/x
3. Step 3: Cross multiply
   1,573.82x = 2,171.87 × 875.19
4. Step 4: Simplify right side
   1,573.82x = 1,900,798.91
5. Step 5: Solve for x
   x = 1,900,798.91/1,573.82
6. Step 6: Final answer
   x = 1,207.76