Finding the Fourth Proportional to 1,185.74, 1,779.42 and 609.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.74 : 1,779.42 = 609.02 : x
2. Step 2: Convert to fraction form
   1,185.74/1,779.42 = 609.02/x
3. Step 3: Cross multiply
   1,185.74x = 1,779.42 × 609.02
4. Step 4: Simplify right side
   1,185.74x = 1,083,702.37
5. Step 5: Solve for x
   x = 1,083,702.37/1,185.74
6. Step 6: Final answer
   x = 913.95