Finding the Fourth Proportional to 1,573.76, 2,171.76 and 875.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.76 : 2,171.76 = 875.12 : x
2. Step 2: Convert to fraction form
   1,573.76/2,171.76 = 875.12/x
3. Step 3: Cross multiply
   1,573.76x = 2,171.76 × 875.12
4. Step 4: Simplify right side
   1,573.76x = 1,900,550.61
5. Step 5: Solve for x
   x = 1,900,550.61/1,573.76
6. Step 6: Final answer
   x = 1,207.65