Finding the Fourth Proportional to 1,556.16, 2,147.52 and 966.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556.16 : 2,147.52 = 966.72 : x
2. Step 2: Convert to fraction form
   1,556.16/2,147.52 = 966.72/x
3. Step 3: Cross multiply
   1,556.16x = 2,147.52 × 966.72
4. Step 4: Simplify right side
   1,556.16x = 2,076,050.53
5. Step 5: Solve for x
   x = 2,076,050.53/1,556.16
6. Step 6: Final answer
   x = 1,334.09