Finding the Fourth Proportional to 1,901.97, 2,623.05 and 1,155.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,901.97 : 2,623.05 = 1,155.15 : x
2. Step 2: Convert to fraction form
   1,901.97/2,623.05 = 1,155.15/x
3. Step 3: Cross multiply
   1,901.97x = 2,623.05 × 1,155.15
4. Step 4: Simplify right side
   1,901.97x = 3,030,016.21
5. Step 5: Solve for x
   x = 3,030,016.21/1,901.97
6. Step 6: Final answer
   x = 1,593.09