Finding the Fourth Proportional to 1,575.82, 2,174.55 and 946.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,575.82 : 2,174.55 = 946.72 : x
2. Step 2: Convert to fraction form
   1,575.82/2,174.55 = 946.72/x
3. Step 3: Cross multiply
   1,575.82x = 2,174.55 × 946.72
4. Step 4: Simplify right side
   1,575.82x = 2,058,689.98
5. Step 5: Solve for x
   x = 2,058,689.98/1,575.82
6. Step 6: Final answer
   x = 1,306.42