Finding the Fourth Proportional to 1,575.52, 2,174.18 and 986.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,575.52 : 2,174.18 = 986.38 : x
2. Step 2: Convert to fraction form
   1,575.52/2,174.18 = 986.38/x
3. Step 3: Cross multiply
   1,575.52x = 2,174.18 × 986.38
4. Step 4: Simplify right side
   1,575.52x = 2,144,556.80
5. Step 5: Solve for x
   x = 2,144,556.80/1,575.52
6. Step 6: Final answer
   x = 1,361.18