Finding the Fourth Proportional to 1,908.64, 2,633.72 and 1,069.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,908.64 : 2,633.72 = 1,069.32 : x
2. Step 2: Convert to fraction form
   1,908.64/2,633.72 = 1,069.32/x
3. Step 3: Cross multiply
   1,908.64x = 2,633.72 × 1,069.32
4. Step 4: Simplify right side
   1,908.64x = 2,816,289.47
5. Step 5: Solve for x
   x = 2,816,289.47/1,908.64
6. Step 6: Final answer
   x = 1,475.55