Finding the Fourth Proportional to 2,172.32, 3,259.64 and 2,054.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.32 : 3,259.64 = 2,054.72 : x
2. Step 2: Convert to fraction form
   2,172.32/3,259.64 = 2,054.72/x
3. Step 3: Cross multiply
   2,172.32x = 3,259.64 × 2,054.72
4. Step 4: Simplify right side
   2,172.32x = 6,697,642.45
5. Step 5: Solve for x
   x = 6,697,642.45/2,172.32
6. Step 6: Final answer
   x = 3,083.18