Finding the Fourth Proportional to 3,974.16, 5,961.96 and 1,200.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,974.16 : 5,961.96 = 1,200.72 : x
2. Step 2: Convert to fraction form
   3,974.16/5,961.96 = 1,200.72/x
3. Step 3: Cross multiply
   3,974.16x = 5,961.96 × 1,200.72
4. Step 4: Simplify right side
   3,974.16x = 7,158,644.61
5. Step 5: Solve for x
   x = 7,158,644.61/3,974.16
6. Step 6: Final answer
   x = 1,801.30