Finding the Fourth Proportional to 1,963.02, 2,945.20 and 1,231.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,963.02 : 2,945.20 = 1,231.72 : x
2. Step 2: Convert to fraction form
   1,963.02/2,945.20 = 1,231.72/x
3. Step 3: Cross multiply
   1,963.02x = 2,945.20 × 1,231.72
4. Step 4: Simplify right side
   1,963.02x = 3,627,661.74
5. Step 5: Solve for x
   x = 3,627,661.74/1,963.02
6. Step 6: Final answer
   x = 1,848.00