Finding the Fourth Proportional to 1,451.34, 2,172.60 and 1,080.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.34 : 2,172.60 = 1,080.18 : x
2. Step 2: Convert to fraction form
   1,451.34/2,172.60 = 1,080.18/x
3. Step 3: Cross multiply
   1,451.34x = 2,172.60 × 1,080.18
4. Step 4: Simplify right side
   1,451.34x = 2,346,799.07
5. Step 5: Solve for x
   x = 2,346,799.07/1,451.34
6. Step 6: Final answer
   x = 1,616.99