Finding the Fourth Proportional to 2,081.72, 3,122.52 and 1,772.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.72 : 3,122.52 = 1,772.84 : x
2. Step 2: Convert to fraction form
   2,081.72/3,122.52 = 1,772.84/x
3. Step 3: Cross multiply
   2,081.72x = 3,122.52 × 1,772.84
4. Step 4: Simplify right side
   2,081.72x = 5,535,728.36
5. Step 5: Solve for x
   x = 5,535,728.36/2,081.72
6. Step 6: Final answer
   x = 2,659.21