Finding the Fourth Proportional to 3,276.40, 4,914.72 and 1,085.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,276.40 : 4,914.72 = 1,085.32 : x
2. Step 2: Convert to fraction form
   3,276.40/4,914.72 = 1,085.32/x
3. Step 3: Cross multiply
   3,276.40x = 4,914.72 × 1,085.32
4. Step 4: Simplify right side
   3,276.40x = 5,334,043.91
5. Step 5: Solve for x
   x = 5,334,043.91/3,276.40
6. Step 6: Final answer
   x = 1,628.02