Finding the Fourth Proportional to 1,168.02, 1,612.10 and 1,109.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.02 : 1,612.10 = 1,109.30 : x
2. Step 2: Convert to fraction form
   1,168.02/1,612.10 = 1,109.30/x
3. Step 3: Cross multiply
   1,168.02x = 1,612.10 × 1,109.30
4. Step 4: Simplify right side
   1,168.02x = 1,788,297.24
5. Step 5: Solve for x
   x = 1,788,297.24/1,168.02
6. Step 6: Final answer
   x = 1,531.05