Finding the Fourth Proportional to 2,320.02, 3,201.72 and 1,272.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,320.02 : 3,201.72 = 1,272.12 : x
2. Step 2: Convert to fraction form
   2,320.02/3,201.72 = 1,272.12/x
3. Step 3: Cross multiply
   2,320.02x = 3,201.72 × 1,272.12
4. Step 4: Simplify right side
   2,320.02x = 4,072,972.05
5. Step 5: Solve for x
   x = 4,072,972.05/2,320.02
6. Step 6: Final answer
   x = 1,755.58