Finding the Fourth Proportional to 1,109.08, 1,665.47 and 693.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.08 : 1,665.47 = 693.58 : x
2. Step 2: Convert to fraction form
   1,109.08/1,665.47 = 693.58/x
3. Step 3: Cross multiply
   1,109.08x = 1,665.47 × 693.58
4. Step 4: Simplify right side
   1,109.08x = 1,155,136.68
5. Step 5: Solve for x
   x = 1,155,136.68/1,109.08
6. Step 6: Final answer
   x = 1,041.53