Finding the Fourth Proportional to 2,165.02, 2,987.73 and 1,170.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,165.02 : 2,987.73 = 1,170.30 : x
2. Step 2: Convert to fraction form
   2,165.02/2,987.73 = 1,170.30/x
3. Step 3: Cross multiply
   2,165.02x = 2,987.73 × 1,170.30
4. Step 4: Simplify right side
   2,165.02x = 3,496,548.54
5. Step 5: Solve for x
   x = 3,496,548.54/2,165.02
6. Step 6: Final answer
   x = 1,615.02