Finding the Fourth Proportional to 1,109.14, 1,537.79 and 1,068.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.14 : 1,537.79 = 1,068.10 : x
2. Step 2: Convert to fraction form
   1,109.14/1,537.79 = 1,068.10/x
3. Step 3: Cross multiply
   1,109.14x = 1,537.79 × 1,068.10
4. Step 4: Simplify right side
   1,109.14x = 1,642,513.50
5. Step 5: Solve for x
   x = 1,642,513.50/1,109.14
6. Step 6: Final answer
   x = 1,480.89