Finding the Fourth Proportional to 1,573.91, 2,172.00 and 875.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.91 : 2,172.00 = 875.29 : x
2. Step 2: Convert to fraction form
   1,573.91/2,172.00 = 875.29/x
3. Step 3: Cross multiply
   1,573.91x = 2,172.00 × 875.29
4. Step 4: Simplify right side
   1,573.91x = 1,901,117.72
5. Step 5: Solve for x
   x = 1,901,117.72/1,573.91
6. Step 6: Final answer
   x = 1,207.89