Finding the Fourth Proportional to 1,556.16, 2,147.42 and 966.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556.16 : 2,147.42 = 966.69 : x
2. Step 2: Convert to fraction form
   1,556.16/2,147.42 = 966.69/x
3. Step 3: Cross multiply
   1,556.16x = 2,147.42 × 966.69
4. Step 4: Simplify right side
   1,556.16x = 2,075,884.61
5. Step 5: Solve for x
   x = 2,075,884.61/1,556.16
6. Step 6: Final answer
   x = 1,333.98