Finding the Fourth Proportional to 2,501.91, 3,448.84 and 1,661.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,501.91 : 3,448.84 = 1,661.13 : x
2. Step 2: Convert to fraction form
   2,501.91/3,448.84 = 1,661.13/x
3. Step 3: Cross multiply
   2,501.91x = 3,448.84 × 1,661.13
4. Step 4: Simplify right side
   2,501.91x = 5,728,971.59
5. Step 5: Solve for x
   x = 5,728,971.59/2,501.91
6. Step 6: Final answer
   x = 2,289.84