Finding the Fourth Proportional to 1,914.28, 2,641.92 and 1,253.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.28 : 2,641.92 = 1,253.05 : x
2. Step 2: Convert to fraction form
   1,914.28/2,641.92 = 1,253.05/x
3. Step 3: Cross multiply
   1,914.28x = 2,641.92 × 1,253.05
4. Step 4: Simplify right side
   1,914.28x = 3,310,457.86
5. Step 5: Solve for x
   x = 3,310,457.86/1,914.28
6. Step 6: Final answer
   x = 1,729.35