Finding the Fourth Proportional to 2,004.31, 2,765.76 and 1,248.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,004.31 : 2,765.76 = 1,248.02 : x
2. Step 2: Convert to fraction form
   2,004.31/2,765.76 = 1,248.02/x
3. Step 3: Cross multiply
   2,004.31x = 2,765.76 × 1,248.02
4. Step 4: Simplify right side
   2,004.31x = 3,451,715.66
5. Step 5: Solve for x
   x = 3,451,715.66/2,004.31
6. Step 6: Final answer
   x = 1,722.15