Finding the Fourth Proportional to 1,391.02, 1,918.83 and 1,250.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391.02 : 1,918.83 = 1,250.08 : x
2. Step 2: Convert to fraction form
   1,391.02/1,918.83 = 1,250.08/x
3. Step 3: Cross multiply
   1,391.02x = 1,918.83 × 1,250.08
4. Step 4: Simplify right side
   1,391.02x = 2,398,691.01
5. Step 5: Solve for x
   x = 2,398,691.01/1,391.02
6. Step 6: Final answer
   x = 1,724.41