Finding the Fourth Proportional to 1,096.58, 1,645.19 and 609.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.58 : 1,645.19 = 609.98 : x
2. Step 2: Convert to fraction form
   1,096.58/1,645.19 = 609.98/x
3. Step 3: Cross multiply
   1,096.58x = 1,645.19 × 609.98
4. Step 4: Simplify right side
   1,096.58x = 1,003,521.72
5. Step 5: Solve for x
   x = 1,003,521.72/1,096.58
6. Step 6: Final answer
   x = 915.14