Finding the Fourth Proportional to 1,085.35, 1,629.99 and 1,041.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.35 : 1,629.99 = 1,041.30 : x
2. Step 2: Convert to fraction form
   1,085.35/1,629.99 = 1,041.30/x
3. Step 3: Cross multiply
   1,085.35x = 1,629.99 × 1,041.30
4. Step 4: Simplify right side
   1,085.35x = 1,697,308.59
5. Step 5: Solve for x
   x = 1,697,308.59/1,085.35
6. Step 6: Final answer
   x = 1,563.84