Finding the Fourth Proportional to 2,909.32, 4,359.83 and 1,813.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,909.32 : 4,359.83 = 1,813.05 : x
2. Step 2: Convert to fraction form
   2,909.32/4,359.83 = 1,813.05/x
3. Step 3: Cross multiply
   2,909.32x = 4,359.83 × 1,813.05
4. Step 4: Simplify right side
   2,909.32x = 7,904,580.72
5. Step 5: Solve for x
   x = 7,904,580.72/2,909.32
6. Step 6: Final answer
   x = 2,716.99