Finding the Fourth Proportional to 1,914.09, 2,641.46 and 1,128.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.09 : 2,641.46 = 1,128.13 : x
2. Step 2: Convert to fraction form
   1,914.09/2,641.46 = 1,128.13/x
3. Step 3: Cross multiply
   1,914.09x = 2,641.46 × 1,128.13
4. Step 4: Simplify right side
   1,914.09x = 2,979,910.27
5. Step 5: Solve for x
   x = 2,979,910.27/1,914.09
6. Step 6: Final answer
   x = 1,556.83