Finding the Fourth Proportional to 1,556.04, 2,147.78 and 966.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556.04 : 2,147.78 = 966.28 : x
2. Step 2: Convert to fraction form
   1,556.04/2,147.78 = 966.28/x
3. Step 3: Cross multiply
   1,556.04x = 2,147.78 × 966.28
4. Step 4: Simplify right side
   1,556.04x = 2,075,356.86
5. Step 5: Solve for x
   x = 2,075,356.86/1,556.04
6. Step 6: Final answer
   x = 1,333.74