Finding the Fourth Proportional to 1,575.48, 2,174.82 and 985.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,575.48 : 2,174.82 = 985.88 : x
2. Step 2: Convert to fraction form
   1,575.48/2,174.82 = 985.88/x
3. Step 3: Cross multiply
   1,575.48x = 2,174.82 × 985.88
4. Step 4: Simplify right side
   1,575.48x = 2,144,111.54
5. Step 5: Solve for x
   x = 2,144,111.54/1,575.48
6. Step 6: Final answer
   x = 1,360.93